| acerate | (adjective) narrow and long and pointed; as pine leaves | Synonyms: acerose, acicular, needle-shaped |
|---|
| acerb | (adjective) sour or bitter in taste | Synonyms: acerbic, astringent |
|---|
| (adjective) harsh or corrosive in tone | Synonyms: acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic |
| acerbate | (verb) make sour or bitter | - |
|---|
| (verb) cause to be bitter or resentful | Synonyms: embitter, envenom |
| acerbic | (adjective) sour or bitter in taste | Synonyms: acerb, astringent |
|---|
| (adjective) harsh or corrosive in tone | Synonyms: acerb, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic |
| acerbity | (noun) a rough and bitter manner | Synonyms: acrimony, bitterness, jaundice, tartness, thorniness |
|---|
| (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 |
|---|
| (noun) tropical American shrub bearing edible acid red fruit resembling cherries | Synonyms: barbados cherry, Malpighia glabra, Surinam cherry, West Indian cherry |
| acerose | (adjective) narrow and long and pointed; as pine leaves | Synonyms: acerate, acicular, needle-shaped |
|---|
| acervate | (adjective) pertaining to a growth of fungi that forms a heaped-up mass | - |
|---|
| 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 | - |
|---|
| acetabular | (adjective) of the cup-shaped socket that receives the head of the thigh bone | Synonyms: cotyloid, cotyloidal |
|---|
| acetonuria | (noun) excessive amounts of ketone bodies in the urine as in diabetes mellitus or starvation | Synonyms: ketoaciduria, ketonuria |
|---|
| achiever | (noun) a person with a record of successes | Synonyms: succeeder, success, winner |
|---|
| achira | (noun) canna grown especially for its edible rootstock from which arrowroot starch is obtained | Synonyms: arrowroot, Canna edulis, Canna indica, indian shot |
|---|
| achlorhydria | (noun) an abnormal deficiency or absence of free hydrochloric acid in the gastric juice; often associated with severe anemias and cancer of the stomach | - |
|---|
| achlorhydric | (adjective) lacking hydrochloric acid | - |
|---|
| achondrite | (noun) a stony meteor lacking chondrules | - |
|---|
| achondritic | (adjective) not having a granular structure | - |
|---|
| (adjective) of or related to an achondrite | - |
| achondroplasia | (noun) an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism | Synonyms: achondroplasty, chondrodystrophy, osteosclerosis congenita |
|---|
| achondroplastic | (adjective) of or relating to achondroplasia | - |
|---|
| achondroplasty | (noun) an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism | Synonyms: achondroplasia, chondrodystrophy, osteosclerosis congenita |
|---|
| achromasia | (noun) unnatural lack of color in the skin (as from bruising or sickness or emotional distress) | Synonyms: lividity, lividness, luridness, paleness, pallidness, pallor, wanness |
|---|
| achromatic | (adjective) having no hue | Synonyms: neutral |
|---|
| achromaticity | (noun) the visual property of being without chromatic color | Synonyms: achromatism, colorlessness, colourlessness |
|---|
| achromatin | (noun) the part of a cell nucleus that is relatively uncolored by stains or dyes | - |
|---|
| achromatinic | (adjective) (of substance of a cell nucleus) not readily colored by stains | - |
|---|
| achromatise | (verb) remove color from | Synonyms: achromatize |
|---|
| achromatism | (noun) the visual property of being without chromatic color | Synonyms: achromaticity, colorlessness, colourlessness |
|---|
| achromatize | (verb) remove color from | Synonyms: achromatise |
|---|
| achromatous | (adjective) having little or inadequate color | - |
|---|
| achromia | (noun) an absence of normal pigmentation especially in the skin (as in albinism) or in red blood cells | - |
|---|
| achromic | (adjective) having no color | Synonyms: achromous |
|---|
| achromous | (adjective) having no color | Synonyms: achromic |
|---|
| acicular | (adjective) narrow and long and pointed; as pine leaves | Synonyms: acerate, acerose, needle-shaped |
|---|
| acidimetric | (adjective) involving or related to acidimetry | - |
|---|
| acidimetry | (noun) volumetric analysis using standard solutions of acids to measure the amount of a base present | - |
|---|
| aciduric | (adjective) especially of some bacteria; growing well in an acid medium | Synonyms: acidophilic, acidophilous |
|---|
| acinar | (adjective) pertaining to the individual parts making up an aggregate fruit like a blackberry | - |
|---|
| (adjective) pertaining to one of the small sacs (as in a compound gland) | Synonyms: acinic, acinose, acinous |
| acneiform | (adjective) resembling acne | - |
|---|
| acorea | (noun) absence of the pupil in an eye | - |
|---|
| acorn | (noun) fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base | - |
|---|
| acquirable | (adjective) capable of being acquired | - |
|---|
| acquire | (verb) come to have or undergo a change of (physical features and attributes) | Synonyms: develop, get, grow, produce |
|---|
| (verb) take on a certain form, attribute, or aspect | Synonyms: adopt, assume, take, take on |
| (verb) gain through experience | Synonyms: develop, evolve |
| (verb) gain knowledge or skills | Synonyms: larn, learn |
| (verb) come into the possession of something concrete or abstract | Synonyms: get |
| (verb) win something through one's efforts | Synonyms: gain, win |
| (verb) locate (a moving entity) by means of a tracking system such as radar | - |
| acquired | (adjective) gotten through environmental forces | - |
|---|
| acquirement | (noun) an ability that has been acquired by training | Synonyms: accomplishment, acquisition, attainment, skill |
|---|
| acquirer | (noun) a corporation gaining financial control over another corporation or financial institution through a payment in cash or an exchange of stock | - |
|---|
| (noun) the financial institution that dispenses cash in automated teller machines and collects a fee from the bank that issued the credit card | - |
| (noun) a credit card processing bank; merchants receive credit for credit card receipts less a processing fee | Synonyms: merchant bank |
| (noun) a person who acquires something (usually permanently) | - |
| acquiring | (noun) the act of acquiring something | Synonyms: getting |
|---|
| acre | (noun) a unit of area (4840 square yards) used in English-speaking countries | - |
|---|
| acreage | (noun) an area of ground used for some particular purpose (such as building or farming) | Synonyms: land area |
|---|
| acres | (noun) extensive landed property (especially in the country) retained by the owner for his own use | Synonyms: demesne, estate, land, landed estate |
|---|
| acrid | (adjective) strong and sharp | Synonyms: pungent |
|---|
| (adjective) harsh or corrosive in tone | Synonyms: acerb, acerbic, acid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic |
| acridid | (noun) grasshopper with short antennae | Synonyms: short-horned grasshopper |
|---|
| acridity | (noun) extreme bitterness | Synonyms: acridness |
|---|
| (noun) the quality of being sharply disagreeable in language or tone | Synonyms: acridness |
| (noun) having an acrid smell | - |
| acridness | (noun) extreme bitterness | Synonyms: acridity |
|---|
| (noun) the quality of being sharply disagreeable in language or tone | Synonyms: acridity |
| acrimonious | (adjective) marked by strong resentment or cynicism | Synonyms: bitter |
|---|
| acrimony | (noun) a rough and bitter manner | Synonyms: acerbity, bitterness, jaundice, tartness, thorniness |
|---|
| acritical | (adjective) without a crisis (as of some diseases) | - |
|---|
| acroanaesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanesthesia |
|---|
| acroanesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanaesthesia |
|---|
| acrobat | (noun) an athlete who performs acts requiring skill and agility and coordination | - |
|---|
| acrobatic | (adjective) vigorously active | Synonyms: athletic, gymnastic |
|---|
| acrobatics | (noun) the gymnastic moves of an acrobat | Synonyms: tumbling |
|---|
| (noun) the performance of stunts while in flight in an aircraft | Synonyms: aerobatics, stunt flying, stunting |
| acrocarp | (noun) a moss in which the main axis is terminated by the archegonium (and hence the capsule) | Synonyms: acrocarpous moss |
|---|
| acrocarpous | (adjective) (of mosses) having the archegonia at the top of the stem | - |
|---|
| acrocentric | (adjective) having a subterminal centromere | - |
|---|
| acrocephaly | (noun) a congenital abnormality of the skull; the top of the skull assumes a cone shape | Synonyms: oxycephaly |
|---|
| acrocyanosis | (noun) cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion | Synonyms: Raynaud's sign |
|---|
| acrodont | (noun) an animal having teeth consolidated with the summit of the alveolar ridge without sockets | - |
|---|
| acrogen | (noun) any flowerless plant such as a fern (pteridophyte) or moss (bryophyte) in which growth occurs only at the tip of the main stem | - |
|---|
| acrogenic | (adjective) pertaining to flowerless plants (ferns or mosses) in which growth occurs only at the tip of the main stem | Synonyms: acrogenous |
|---|
| acrogenous | (adjective) pertaining to flowerless plants (ferns or mosses) in which growth occurs only at the tip of the main stem | Synonyms: acrogenic |
|---|
| acrolein | (noun) a pungent colorless unsaturated liquid aldehyde made from propene | Synonyms: propenal |
|---|
| acromegalia | (noun) enlargement of bones of hands and feet and face; often accompanied by headache and muscle pain and emotional disturbances; caused by overproduction of growth hormone by the anterior pituitary gland (due to a tumor) | Synonyms: acromegaly |
|---|
| acromegalic | (adjective) marked or affected by enlargement or hypertrophy of the extremities or the face | - |
|---|
| acromegaly | (noun) enlargement of bones of hands and feet and face; often accompanied by headache and muscle pain and emotional disturbances; caused by overproduction of growth hormone by the anterior pituitary gland (due to a tumor) | Synonyms: acromegalia |
|---|
| acromicria | (noun) abnormally small extremities (underdeveloped fingers and toes) | Synonyms: acromikria |
|---|
| acromikria | (noun) abnormally small extremities (underdeveloped fingers and toes) | Synonyms: acromicria |
|---|
| acromion | (noun) the outermost point of the spine of the shoulder blade | Synonyms: acromial process |
|---|
| acromphalus | (noun) abnormal protrusion of the navel; sometimes the start of umbilical hernia | - |
|---|
| acromyotonia | (noun) myotonia of the extremities only; causes spastic deformity of the hand or foot | - |
|---|
| acronym | (noun) a word formed from the initial letters of the several words in the name and pronounced as one word | Synonyms: initialism |
|---|
| acronymic | (adjective) characterized by the use of acronyms | Synonyms: acronymous |
|---|
| acronymous | (adjective) characterized by the use of acronyms | Synonyms: acronymic |
|---|
| acropetal | (adjective) of leaves or flowers; developing or opening in succession from base to apex | - |
|---|
| acrophobia | (noun) a morbid fear of great heights | - |
|---|
| acrophobic | (adjective) suffering from acrophobia; abnormally afraid of high places | - |
|---|
| acrophony | (noun) naming a letter of the alphabet by using a word whose initial sound is the sound represented by that letter | - |
|---|
| acropolis | (noun) the citadel in ancient Greek towns | - |
|---|
| acroscopic | (adjective) facing or on the side toward the apex | - |
|---|
| acrosome | (noun) a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg | - |
|---|
| across | (adverb) transversely | Synonyms: crossways, crosswise |
|---|
| (adverb) to the opposite side | - |
| acrostic | (noun) a puzzle where you fill a square grid with words reading the same down as across | Synonyms: word square |
|---|
| (noun) verse in which certain letters such as the first in each line form a word or message | - |
| acrylamide | (noun) a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals | - |
|---|
| acrylate | (noun) a salt or ester of propenoic acid | Synonyms: propenoate |
|---|
| acrylic | (noun) a synthetic fabric made from polyacrylonitrile | - |
|---|
| (noun) used especially by artists | Synonyms: acrylic paint |
| (noun) a glassy thermoplastic; can be cast and molded or used in coatings and adhesives | Synonyms: acrylate resin, acrylic resin |
| (noun) polymerized from acrylonitrile | Synonyms: acrylic fiber |
| acrylonitrile | (noun) a colorless liquid unsaturated nitrile made from propene | Synonyms: propenonitrile, vinyl cyanide |
|---|
| actiniarian | (noun) any sea anemone or related animal | Synonyms: actinia, actinian |
|---|
| actinometer | (noun) an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect) | - |
|---|
| actinometric | (adjective) of or related to actinometry | Synonyms: actinometrical |
|---|
| actinometrical | (adjective) of or related to actinometry | Synonyms: actinometric |
|---|
| actinometry | (noun) measuring the intensity of electromagnetic radiation (especially of the sun's rays) | - |
|---|