| ace | (noun) a serve that the receiver is unable to reach | - |
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| (noun) one of four playing cards in a deck having a single pip on its face | - |
| (noun) someone who is dazzlingly skilled in any field | Synonyms: adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard |
| (noun) the smallest whole number or a numeral representing this number | Synonyms: 1, I, one, single, unity |
| acebutolol | (noun) an oral beta blocker (trade name Sectral) used in treating hypertension | Synonyms: Sectral |
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| acedia | (noun) apathy and inactivity in the practice of virtue (personified as one of the deadly sins) | Synonyms: laziness, sloth |
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| acephalia | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalism, acephaly |
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| acephalism | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalia, acephaly |
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| acephaly | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalia, acephalism |
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| acerbity | (noun) a rough and bitter manner | Synonyms: acrimony, bitterness, jaundice, tartness, thorniness |
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| (noun) a sharp sour taste | Synonyms: tartness |
| (noun) a sharp bitterness | - |
| acerola | (noun) acid red or yellow cherry-like fruit of a tropical American shrub very rich in vitamin C | Synonyms: barbados cherry, surinam cherry, West Indian cherry |
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| (noun) tropical American shrub bearing edible acid red fruit resembling cherries | Synonyms: barbados cherry, Malpighia glabra, Surinam cherry, West Indian cherry |
| acervulus | (noun) small asexual fruiting body resembling a cushion or blister consisting of a mat of hyphae that is produced on a host by some fungi | - |
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| acetabulum | (noun) the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint | Synonyms: cotyloid cavity |
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| acetal | (noun) any organic compound formed by adding alcohol molecules to aldehyde molecules | - |
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| acetaldehyde | (noun) a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs | Synonyms: ethanal |
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| acetaldol | (noun) unsaturated aldol | - |
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| acetamide | (noun) a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds | Synonyms: ethanamide |
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| acetaminophen | (noun) an analgesic for mild pain but not for inflammation; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets) | Synonyms: Anacin III, Datril, Panadol, Phenaphen, Tempra, Tylenol |
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| acetanilid | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilide, phenylacetamide |
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| acetanilide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, phenylacetamide |
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| acetate | (noun) a fabric made from fibers of cellulose acetate | Synonyms: acetate rayon |
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| (noun) a salt or ester of acetic acid | Synonyms: ethanoate |
| acetin | (noun) any of three liquid acetates that are formed when acetic acid and glycerin are heated together | - |
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| acetone | (noun) the simplest ketone; a highly flammable liquid widely used as an organic solvent and as material for making plastics | Synonyms: dimethyl ketone, propanone |
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| acetonemia | (noun) an abnormal increase of ketone bodies in the blood as in diabetes mellitus | Synonyms: ketonemia, ketosis |
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| acetonuria | (noun) excessive amounts of ketone bodies in the urine as in diabetes mellitus or starvation | Synonyms: ketoaciduria, ketonuria |
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| acetophenetidin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetphenetidin, phenacetin |
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| acetphenetidin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetophenetidin, phenacetin |
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| acetum | (noun) sour-tasting liquid produced usually by oxidation of the alcohol in wine or cider and used as a condiment or food preservative | Synonyms: vinegar |
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| (noun) a dilute solution of acetic acid that is used as a solvent (e.g. for a drug) | - |
| acetyl | (noun) the organic group of acetic acid (CH3CO-) | Synonyms: acetyl group, acetyl radical, ethanoyl group, ethanoyl radical |
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| acetylation | (noun) the process of introducing an acetyl group into a compound | - |
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| acetylcholine | (noun) a neurotransmitter that is a derivative of choline; released at the ends of nerve fibers in the somatic and parasympathetic nervous systems | - |
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| acetylene | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: alkyne, ethyne |
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| adjacency | (noun) the attribute of being so near as to be touching | Synonyms: contiguity, contiguousness |
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| aerospace | (noun) the atmosphere and outer space considered as a whole | - |
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| airspace | (noun) the atmosphere above a nation that is deemed to be under its jurisdiction | - |
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| (noun) the space in the atmosphere immediately above the earth | Synonyms: air space |
| backspace | (noun) the typewriter key used for back spacing | Synonyms: backspace key, backspacer |
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| backspacer | (noun) the typewriter key used for back spacing | Synonyms: backspace, backspace key |
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| birthplace | (noun) the place where someone was born | Synonyms: place of birth |
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| (noun) where something originated or was nurtured in its early existence | Synonyms: cradle, place of origin, provenance, provenience |
| blackface | (noun) the makeup (usually burnt cork) used by a performer in order to imitate a Negro | - |
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| boldface | (noun) a typeface with thick heavy lines | Synonyms: bold, bold face |
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| boniface | (noun) the owner or manager of an inn | Synonyms: host, innkeeper |
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| bootlace | (noun) a long lace for fastening boots | - |
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| brace | (noun) a structural member used to stiffen a framework | Synonyms: bracing |
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| (noun) a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring | Synonyms: bitstock |
| (noun) an appliance that corrects dental irregularities | Synonyms: braces, orthodontic braces |
| (noun) a support that steadies or strengthens something else | - |
| (noun) elastic straps that hold trousers up | Synonyms: gallus, suspender |
| (noun) a rope on a square-rigged ship that is used to swing a yard about and secure it | - |
| (noun) either of two punctuation marks ({ or }) used to enclose textual material | - |
| (noun) a set of two similar things considered as a unit | Synonyms: pair |
| (noun) two items of the same kind | Synonyms: couple, couplet, distich, duad, duet, duo, dyad, pair, span, twain, twosome, yoke |
| bracelet | (noun) jewelry worn around the wrist for decoration | Synonyms: bangle |
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| (noun) a band of cloth or leather or metal links attached to a wristwatch and wrapped around the wrist | Synonyms: watch bracelet, watchband, watchstrap, wristband |
| bracer | (noun) a tonic or restorative (especially a drink of liquor) | Synonyms: pick-me-up |
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| (noun) a protective covering for the wrist or arm that is used in archery and fencing and other sports | Synonyms: armguard |
| bracero | (noun) a Mexican laborer who worked in the United States on farms and railroads in order to ease labor shortages during World War II | - |
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| braces | (noun) an appliance that corrects dental irregularities | Synonyms: brace, orthodontic braces |
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| bullace | (noun) small wild or half-domesticated Eurasian plum bearing small ovoid fruit in clusters | Synonyms: Prunus insititia |
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| carapace | (noun) hard outer covering or case of certain organisms such as arthropods and turtles | Synonyms: cuticle, shell, shield |
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| cetacean | (noun) large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals | Synonyms: blower, cetacean mammal |
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| chloroacetophenone | (noun) a tear gas that is weaker than CS gas but lasts longer | Synonyms: CN gas |
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| coalface | (noun) the part of a coal seam that is being cut | - |
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| commonplace | (noun) a trite or obvious remark | Synonyms: banality, bromide, cliche, platitude |
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| commonplaceness | (noun) ordinariness as a consequence of being frequent and commonplace | Synonyms: commonness, everydayness |
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| complacence | (noun) the feeling you have when you are satisfied with yourself | Synonyms: complacency, self-complacency, self-satisfaction |
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| complacency | (noun) the feeling you have when you are satisfied with yourself | Synonyms: complacence, self-complacency, self-satisfaction |
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| contraception | (noun) birth control by the use of devices (diaphragm or intrauterine device or condom) or drugs or surgery | Synonyms: contraceptive method |
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| contraceptive | (noun) an agent or device intended to prevent conception | Synonyms: birth control device, contraceptive device, preventative, preventive, prophylactic device |
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| crawlspace | (noun) low space beneath a floor of a building; gives workers access to wiring or plumbing | Synonyms: crawl space |
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| crustacean | (noun) any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton | - |
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| curvaceousness | (noun) the quality of having a well-rounded body | Synonyms: shapeliness, voluptuousness |
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| cyberspace | (noun) a computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange | Synonyms: internet, net |
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| dace | (noun) small European freshwater fish with a slender bluish-green body | Synonyms: Leuciscus leuciscus |
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| defacement | (noun) the act of damaging the appearance or surface of something | Synonyms: disfiguration, disfigurement, mutilation |
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| demiglace | (noun) sauce Espagnole with extra beef stock simmered down and seasoned with dry wine or sherry | Synonyms: demi-glaze |
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| diacetylmorphine | (noun) a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush | Synonyms: heroin |
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| disgrace | (noun) a state of dishonor | Synonyms: ignominy, shame |
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| disgracefulness | (noun) unworthiness meriting public disgrace and dishonor | Synonyms: ignominiousness, shamefulness |
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| displacement | (noun) act of taking the place of another especially using underhanded tactics | Synonyms: supplanting |
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| (noun) act of removing from office or employment | - |
| (noun) the act of uniform movement | Synonyms: translation |
| (noun) to move something from its natural environment | Synonyms: deracination |
| (noun) an event in which something is displaced without rotation | Synonyms: shift |
| (noun) (psychiatry) a defense mechanism that transfers affect or reaction from the original object to some more acceptable one | - |
| (noun) (chemistry) a reaction in which an elementary substance displaces and sets free a constituent element from a compound | Synonyms: displacement reaction |
| effacement | (noun) withdrawing into the background; making yourself inconspicuous | Synonyms: self-effacement |
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| (noun) shortening of the uterine cervix and thinning of its walls as it is dilated during labor | - |
| embrace | (noun) the act of clasping another person in the arms (as in greeting or affection) | Synonyms: embracement, embracing |
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| (noun) a close affectionate and protective acceptance | Synonyms: bosom |
| (noun) the state of taking in or encircling | - |
| embracement | (noun) the act of clasping another person in the arms (as in greeting or affection) | Synonyms: embrace, embracing |
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| emplacement | (noun) the act of putting something in a certain place | Synonyms: locating, location, placement, position, positioning |
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| (noun) military installation consisting of a prepared position for siting a weapon | - |
| exacerbation | (noun) violent and bitter exasperation | - |
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| (noun) action that makes a problem or a disease (or its symptoms) worse | Synonyms: aggravation |
| face | (noun) a vertical surface of a building or cliff | - |
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| (noun) the side upon which the use of a thing depends (usually the most prominent surface of an object) | - |
| (noun) the striking or working surface of an implement | - |
| (noun) the general outward appearance of something | - |
| (noun) status in the eyes of others | - |
| (noun) impudent aggressiveness | Synonyms: boldness, brass, cheek, nerve |
| (noun) the feelings expressed on a person's face | Synonyms: aspect, expression, facial expression, look |
| (noun) the front of the human head from the forehead to the chin and ear to ear | Synonyms: human face |
| (noun) the part of an animal corresponding to the human face | - |
| (noun) a specific size and style of type within a type family | Synonyms: case, font, fount, typeface |
| (noun) a contorted facial expression | Synonyms: grimace |
| (noun) a surface forming part of the outside of an object | Synonyms: side |
| (noun) a part of a person that is used to refer to a person | - |
| facelift | (noun) plastic surgery to remove wrinkles and other signs of aging from your face; an incision is made near the hair line and skin is pulled back and excess tissue is excised | Synonyms: cosmetic surgery, face lift, face lifting, lift, nip and tuck, rhytidectomy, rhytidoplasty |
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| (noun) a renovation that improves the outward appearance (as of a building) but usually does not involve major changes | Synonyms: face lift, face lifting |
| facepalm | (noun) the act of putting your hand to cover your face to show disappointment or despair | - |
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| faceplate | (noun) a protective covering for the front of a machine or device (as a door lock or computer component) | - |
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| facer | (noun) (a dated Briticism) a serious difficulty with which one is suddenly faced | - |
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| facet | (noun) a distinct feature or element in a problem | Synonyms: aspect |
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| (noun) a smooth surface (as of a bone or cut gemstone) | - |
| facetiousness | (noun) playful humor | - |
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| farmplace | (noun) a farm together with its buildings | Synonyms: farm-place, farmstead |
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| fireplace | (noun) an open recess in a wall at the base of a chimney where a fire can be built | Synonyms: hearth, open fireplace |
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| footrace | (noun) a race run on foot | Synonyms: foot race, run |
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| furnace | (noun) an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc. | - |
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| gallinacean | (noun) heavy-bodied largely ground-feeding domestic or game birds | Synonyms: gallinaceous bird |
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| grace | (noun) a sense of propriety and consideration for others | Synonyms: seemliness |
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| (noun) elegance and beauty of movement or expression | Synonyms: gracility |
| (noun) (Christian theology) the free and unmerited favor or beneficence of God | Synonyms: free grace, grace of God |
| (noun) a disposition to kindness and compassion | Synonyms: good will, goodwill |
| (noun) a short prayer of thanks before a meal | Synonyms: blessing, thanksgiving |
| (noun) (Christian theology) a state of sanctification by God; the state of one who is under such divine influence | Synonyms: saving grace, state of grace |
| (noun) a period of time past the deadline for fulfilling an obligation during which a penalty that would be imposed for being late is waived, especially an extended period granted as a special favor | Synonyms: grace period |
| gracefulness | (noun) beautiful carriage | - |
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| gracelessness | (noun) an unpleasant lack of grace in carriage or form or movement or expression | Synonyms: ungracefulness |
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| (noun) the inelegance of someone stiff and unrelaxed (as by embarrassment) | Synonyms: awkwardness, clumsiness, stiffness |
| grimace | (noun) a contorted facial expression | Synonyms: face |
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| hacek | (noun) a diacritical mark (an inverted circumflex) placed above certain letters (such as the letter c) to indicate pronunciation | Synonyms: wedge |
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| headrace | (noun) a waterway that feeds water to a mill or water wheel or turbine | - |
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| headspace | (noun) the volume left at the top of a filled container (bottle or jar or tin) before sealing | - |
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| hemiacetal | (noun) an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones | - |
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| ineffaceability | (noun) The quality of being difficult to delete, remove, wash away, blot out, or efface. | Synonyms: indelibility |
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| interface | (noun) (chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases) | - |
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| (noun) (computer science) computer circuit consisting of the hardware and associated circuitry that links one device with another (especially a computer and a hard disk drive or other peripherals) | Synonyms: port |
| (noun) the overlap where two theories or phenomena affect each other or have links with each other | - |
| (noun) (computer science) a program that controls a display for the user (usually on a computer monitor) and that allows the user to interact with the system | Synonyms: user interface |
| irreplaceableness | (noun) the quality of being irreplaceable | - |
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| lace | (noun) a delicate decorative fabric woven in an open web of symmetrical patterns | - |
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| (noun) a cord that is drawn through eyelets or around hooks in order to draw together two edges (as of a shoe or garment) | Synonyms: lacing |
| lacebark | (noun) small tree or shrub of New Zealand having a profusion of axillary clusters of honey-scented paper-white flowers and whose bark is used for cordage | Synonyms: Hoheria populnea, houhere, ribbonwood |
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| lacepod | (noun) annual herb having pinnatifid basal leaves and slender racemes of small white flowers followed by one-seeded winged silicles | Synonyms: fringepod |
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| lacer | (noun) a workman who laces shoes or footballs or books (during binding) | - |
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| laceration | (noun) the act of lacerating | - |
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| (noun) a torn ragged wound | - |
| lacertid | (noun) Old World terrestrial lizard | Synonyms: lacertid lizard |
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