| anapsid | (noun) primitive reptile having no opening in the temporal region of the skull; all extinct except turtles | Synonyms: anapsid reptile |
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| argasid | (noun) tick lacking a dorsal shield and having mouth parts on the under side of the head | Synonyms: soft tick |
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| aside | (noun) a line spoken by an actor to the audience but not intended for others on the stage | - |
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| (noun) a message that departs from the main subject | Synonyms: digression, divagation, excursus, parenthesis |
| assiduity | (noun) great and constant diligence and attention | Synonyms: assiduousness, concentration |
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| assiduousness | (noun) great and constant diligence and attention | Synonyms: assiduity, concentration |
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| backside | (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
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| (noun) the side of an object that is opposite its front | Synonyms: back end, rear |
| basidiocarp | (noun) the fruiting body of a basidiomycete which bears its spores on special cells | - |
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| basidiolichen | (noun) a lichen in which the fungus component is a basidiomycete | - |
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| basidiomycete | (noun) any of various fungi of the subdivision Basidiomycota | Synonyms: basidiomycetous fungi |
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| basidiospore | (noun) a sexually produced fungal spore borne on a basidium | - |
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| basidium | (noun) a small club-shaped structure typically bearing four basidiospores at the ends of minute projections; unique to basidiomycetes | - |
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| bedside | (noun) space by the side of a bed (especially the bed of a sick or dying person) | - |
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| broadside | (noun) the simultaneous firing of all the armament on one side of a warship | - |
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| (noun) the whole side of a vessel from stem to stern | - |
| (noun) all of the armament that is fired from one side of a warship | - |
| (noun) an advertisement (usually printed on a page or in a leaflet) intended for wide distribution | Synonyms: bill, broadsheet, circular, flier, flyer, handbill, throwaway |
| (noun) a speech of violent denunciation | Synonyms: philippic, tirade |
| burnside | (noun) facial hair that has grown down the side of a man's face in front of the ears (especially when the rest of the beard is shaved off) | Synonyms: mutton chop, side-whiskers, sideburn |
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| canyonside | (noun) the steeply sloping side of a canyon | - |
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| capsid | (noun) the outer covering of protein surrounding the nucleic acid of a virus | - |
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| (noun) a variety of leaf bug | Synonyms: mirid, mirid bug |
| cerebroside | (noun) A cerebroside is any of various organic lipid compounds containing glucose or galactose and glucose; it occurs in the myelin sheath of cerebrospinal neurons. | - |
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| considerateness | (noun) kind and considerate regard for others | Synonyms: consideration, thoughtfulness |
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| consideration | (noun) a considerate and thoughtful act | Synonyms: thoughtfulness |
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| (noun) kind and considerate regard for others | Synonyms: considerateness, thoughtfulness |
| (noun) the process of giving careful thought to something | - |
| (noun) information that should be kept in mind when making a decision | Synonyms: circumstance, condition |
| (noun) a discussion of a topic (as in a meeting) | - |
| (noun) a fee charged in advance to retain the services of someone | Synonyms: retainer |
| countryside | (noun) rural regions | - |
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| curbside | (noun) the side of a sidewalk that is bordered by a curb | - |
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| desideratum | (noun) something desired as a necessity | - |
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| diapsid | (noun) reptile having a pair of openings in the skull behind each eye | Synonyms: diapsid reptile |
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| dissidence | (noun) disagreement; especially disagreement with the government | - |
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| dissident | (noun) a person who dissents from some established policy | Synonyms: contestant, dissenter, objector, protester |
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| dockside | (noun) the region adjacent to a boat dock | - |
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| downside | (noun) a negative aspect of something that is generally positive | - |
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| fireside | (noun) home symbolized as a part of the fireplace | Synonyms: hearth |
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| (noun) an area near a fireplace (usually paved and extending out into a room) | Synonyms: hearth |
| glucoside | (noun) a glycoside derived from glucose | - |
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| glycoside | (noun) a group of compounds derived from monosaccharides | - |
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| haemosiderin | (noun) a granular brown substance composed of ferric oxide; left from the breakdown of hemoglobin; can be a sign of disturbed iron metabolism | Synonyms: hemosiderin |
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| haemosiderosis | (noun) abnormal deposit of hemosiderin; often a symptom of thalassemia or hemochromatosis | Synonyms: hemosiderosis |
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| hemosiderin | (noun) a granular brown substance composed of ferric oxide; left from the breakdown of hemoglobin; can be a sign of disturbed iron metabolism | Synonyms: haemosiderin |
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| hemosiderosis | (noun) abnormal deposit of hemosiderin; often a symptom of thalassemia or hemochromatosis | Synonyms: haemosiderosis |
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| hillside | (noun) the side or slope of a hill | - |
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| hypobasidium | (noun) special cell constituting the base of the basidium in various fungi especially of the order Tremellales | - |
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| inconsiderateness | (noun) the quality of failing to be considerate of others | Synonyms: inconsideration, thoughtlessness |
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| inconsideration | (noun) the quality of failing to be considerate of others | Synonyms: inconsiderateness, thoughtlessness |
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| inside | (noun) the inner or enclosed surface of something | Synonyms: interior |
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| (noun) the region that is inside of something | Synonyms: interior |
| insider | (noun) an officer of a corporation or others who have access to private information about the corporation's operations | - |
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| insides | (noun) internal organs collectively (especially those in the abdominal cavity) | Synonyms: entrails, innards, viscera |
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| insidiousness | (noun) subtle and cumulative harmfulness (especially of a disease) | - |
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| (noun) the quality of being designed to entrap | - |
| ironside | (noun) a man of great strength or bravery | - |
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| jassid | (noun) a variety of leafhopper | - |
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| lakeside | (noun) the shore of a lake | Synonyms: lakeshore |
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| landside | (noun) component consisting of a side piece opposite the moldboard | - |
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| liliopsid | (noun) a monocotyledonous flowering plant; the stem grows by deposits on its inside | Synonyms: endogen, monocot, monocotyledon |
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| lopsidedness | (noun) an oblique or slanting asymmetry | Synonyms: skewness |
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| magnoliopsid | (noun) flowering plant with two cotyledons; the stem grows by deposit on its outside | Synonyms: dicot, dicotyledon, exogen |
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| mountainside | (noun) the side or slope of a mountain | Synonyms: versant |
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| nearside | (noun) the side of a vehicle nearest the kerb | - |
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| nonresident | (noun) someone who does not live in a particular place | - |
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| nucleoside | (noun) a glycoside formed by partial hydrolysis of a nucleic acid | - |
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| obsidian | (noun) acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces | - |
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| offside | (noun) (sport) the mistake of occupying an illegal position on the playing field (in football, soccer, ice hockey, field hockey, etc.) | - |
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| outside | (noun) the outer side or surface of something | Synonyms: exterior |
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| (noun) the region that is outside of something | Synonyms: exterior |
| outsider | (noun) someone who is excluded from or is not a member of a group | Synonyms: foreigner |
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| (noun) a contestant (human or animal) not considered to have a good chance to win | - |
| praesidium | (noun) a permanent executive committee in socialist countries that has all the powers of some larger legislative body and that acts for it when it is not in session | Synonyms: presidium |
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| presidency | (noun) the office and function of president | Synonyms: presidentship |
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| (noun) the tenure of a president | Synonyms: administration, presidential term |
| president | (noun) the chief executive of a republic | - |
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| (noun) an executive officer of a firm or corporation | - |
| (noun) the head administrative officer of a college or university | Synonyms: prexy |
| (noun) the officer who presides at the meetings of an organization | Synonyms: chair, chairperson |
| presidentship | (noun) the office and function of president | Synonyms: presidency |
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| presidio | (noun) a fortress established in the southwestern United States by the Spanish in order to protect their missions and other holdings | - |
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| presidium | (noun) a permanent executive committee in socialist countries that has all the powers of some larger legislative body and that acts for it when it is not in session | Synonyms: praesidium |
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| reconsideration | (noun) thinking again about a choice previously made | Synonyms: afterthought, rethink, second thought |
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| (noun) a consideration of a topic (as in a meeting) with a view to changing an earlier decision | - |
| resid | (noun) oil products that remain after petroleum has been distilled | Synonyms: residual oil |
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| residence | (noun) the act of dwelling in a place | Synonyms: abidance, residency |
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| (noun) the official house or establishment of an important person (as a sovereign or president) | - |
| (noun) a large and imposing house | Synonyms: hall, manse, mansion, mansion house |
| (noun) any address at which you dwell more than temporarily | Synonyms: abode |
| residency | (noun) the act of dwelling in a place | Synonyms: abidance, residence |
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| (noun) the position of physician who is receiving special training in a hospital (usually after completing an internship) | - |
| resident | (noun) someone who lives at a particular place for a prolonged period or who was born there | Synonyms: occupant, occupier |
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| (noun) a physician (especially an intern) who lives in a hospital and cares for hospitalized patients under the supervision of the medical staff of the hospital | Synonyms: house physician, resident physician |
| residual | (noun) (often plural) a payment that is made to a performer or writer or director of a television show or commercial that is paid for every repeat showing | - |
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| (noun) something left after other parts have been taken away | Synonyms: balance, remainder, residue, residuum, rest |
| residue | (noun) something left after other parts have been taken away | Synonyms: balance, remainder, residual, residuum, rest |
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| (noun) matter that remains after something has been removed | - |
| residuum | (noun) something left after other parts have been taken away | Synonyms: balance, remainder, residual, residue, rest |
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| ringside | (noun) first row of seating; has an unobstructed view of a boxing or wrestling ring | Synonyms: ringside seat |
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| riverside | (noun) the bank of a river | Synonyms: riverbank |
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| roadside | (noun) edge of a way or road or path | Synonyms: wayside |
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| seaside | (noun) the shore of a sea or ocean regarded as a resort | Synonyms: seaboard |
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| shipside | (noun) the part of a wharf that is next to a ship | - |
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| side | (noun) an extended outer surface of an object | - |
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| (noun) either the left or right half of a body | - |
| (noun) an aspect of something (as contrasted with some other implied aspect) | - |
| (noun) an opinion that is held in opposition to another in an argument or dispute | Synonyms: position |
| (noun) (sports) the spin given to a ball by striking it on one side or releasing it with a sharp twist | Synonyms: English |
| (noun) a lengthwise dressed half of an animal's carcass used for food | Synonyms: side of meat |
| (noun) one of two or more contesting groups | - |
| (noun) a family line of descent | - |
| (noun) a surface forming part of the outside of an object | Synonyms: face |
| (noun) a line segment forming part of the perimeter of a plane figure | - |
| (noun) a place within a region identified relative to a center or reference location | - |
| (noun) an elevated geological formation | Synonyms: incline, slope |
| sidebar | (noun) (law) a courtroom conference between the lawyers and the judge that is held out of the jury's hearing | - |
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| (noun) a short news story presenting sidelights on a major story | - |
| sideboard | (noun) a piece of furniture that stands at the side of a dining room; has shelves and drawers | Synonyms: buffet, counter |
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| (noun) a board that forms part of the side of a bed or crib | - |
| (noun) a removable board fitted on the side of a wagon to increase its capacity | - |
| sideboob | (noun) A breast exposed from the side | - |
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| sideburn | (noun) facial hair that has grown down the side of a man's face in front of the ears (especially when the rest of the beard is shaved off) | Synonyms: burnside, mutton chop, side-whiskers |
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| sidecar | (noun) conveyance consisting of a small carrier attached to the side of a motorcycle | - |
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| (noun) a cocktail made of orange liqueur with lemon juice and brandy | - |
| sidekick | (noun) a close friend who accompanies his buddies in their activities | Synonyms: brother, buddy, chum, crony, pal |
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| sidelight | (noun) light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow | Synonyms: running light |
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| sideline | (noun) an auxiliary activity | Synonyms: avocation, by-line, hobby, pursuit, spare-time activity |
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| (noun) an auxiliary line of merchandise | - |
| (noun) a line that marks the side boundary of a playing field | Synonyms: out of bounds |
| siderite | (noun) a meteorite consisting principally of nickel and iron | - |
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| (noun) iron ore in the form of ferrous carbonate | Synonyms: chalybite |
| sideroblast | (noun) an erythroblast having granules of ferritin | - |
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| siderocyte | (noun) an abnormal red blood cell containing granules of iron not bound in hemoglobin | - |
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| sideropenia | (noun) a deficiency of iron; results from inadequate iron in the diet or from hemorrhage | - |
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| siderophilin | (noun) a globulin in blood plasma that carries iron | Synonyms: beta globulin, transferrin |
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| siderosis | (noun) fibrosis of the lung caused by iron dust; occurs among welders and other metal workers | - |
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| sidesaddle | (noun) a saddle for a woman; rider sits with both feet on the same side of the horse | - |
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| sideshow | (noun) a minor show that is part of a larger one (as at the circus) | - |
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| (noun) a subordinate incident of little importance relative to the main event | - |
| sideslip | (noun) an unexpected slide | Synonyms: skid, slip |
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| (noun) a flight maneuver; aircraft slides sideways in the air | Synonyms: slip |
| sidesman | (noun) (Church of England) an assistant to the churchwarden; collects offerings of money in the church | - |
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| sidesplitter | (noun) a joke that seems extremely funny | Synonyms: belly laugh, howler, riot, scream, thigh-slapper, wow |
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| sidestep | (noun) a step to one side (as in boxing or dancing) | - |
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| sidestroke | (noun) a swimming stroke in which the arms move forward and backward while the legs do a scissors kick | - |
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| sideswipe | (noun) a glancing blow from or on the side of something (especially motor vehicles) | - |
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| sidetrack | (noun) a short stretch of railroad track used to store rolling stock or enable trains on the same line to pass | Synonyms: railroad siding, siding, turnout |
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