| abortifacient | (noun) a drug (or other chemical agent) that causes abortion | Synonyms: aborticide, abortion-inducing drug |
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| acidification | (noun) the process of becoming acid or being converted into an acid | - |
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| afterlife | (noun) life after death | Synonyms: hereafter |
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| airlift | (noun) transportation of people or goods by air (especially when other means of access are unavailable) | Synonyms: lift |
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| alewife | (noun) shad-like food fish that runs rivers to spawn; often salted or smoked; sometimes placed in genus Pomolobus | Synonyms: Alosa pseudoharengus, Pomolobus pseudoharengus |
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| (noun) flesh of shad-like fish abundant along the Atlantic coast or in coastal streams | - |
| ammonification | (noun) impregnation with ammonia or a compound of ammonia | - |
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| amplification | (noun) (electronics) the act of increasing voltage or power or current | - |
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| (noun) addition of extra material or illustration or clarifying detail | Synonyms: elaboration |
| (noun) the amount of increase in signal power or voltage or current expressed as the ratio of output to input | Synonyms: gain |
| amplifier | (noun) electronic equipment that increases strength of signals passing through it | - |
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| antifeminism | (noun) activity indicative of belief in the superiority of men over women | Synonyms: chauvinism, male chauvinism |
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| antifeminist | (noun) someone who does not believe in the social or economic or political equality of men and women | - |
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| antiferromagnet | (noun) any material that has antiferromagnetic properties. | - |
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| antiferromagnetism | (noun) magnetic field creates parallel but opposing spins; varies with temperature | - |
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| antifertilizin | (noun) An immunologically specific substance produced by animal sperm to implement attraction by the egg before fertilization. | - |
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| antiflatulent | (noun) any agent that reduces intestinal gas | - |
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| antifreeze | (noun) a liquid added to the water in a cooling system to lower its freezing point | - |
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| antifungal | (noun) any agent that destroys or prevents the growth of fungi | Synonyms: antifungal agent, antimycotic, antimycotic agent, fungicide |
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| aperitif | (noun) alcoholic beverage taken before a meal as an appetizer | - |
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| aquifer | (noun) underground bed or layer yielding ground water for wells and springs etc | - |
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| artifact | (noun) a man-made object taken as a whole | Synonyms: artefact |
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| artifice | (noun) a deceptive maneuver (especially to avoid capture) | Synonyms: ruse |
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| artificer | (noun) a skilled worker who practices some trade or handicraft | Synonyms: artisan, craftsman, journeyman |
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| (noun) someone who is the first to think of or make something | Synonyms: discoverer, inventor |
| (noun) an enlisted man responsible for the upkeep of small arms and machine guns etc. | Synonyms: armorer, armourer |
| artificialism | (noun) Czech surrealism founded in 1928 by Jindrich Styrsky and Toyen (Marie Cerminova). | - |
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| artificiality | (noun) the quality of being produced by people and not occurring naturally | - |
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| avifauna | (noun) the birds of a particular region or period | - |
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| bailiff | (noun) an officer of the court who is employed to execute writs and processes and make arrests etc. | - |
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| bailiffship | (noun) the office of bailiff | - |
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| beatification | (noun) (Roman Catholic Church) an act of the Pope who declares that a deceased person lived a holy life and is worthy of public veneration; a first step toward canonization | - |
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| (noun) the action of rendering supremely blessed and extremely happy | - |
| (noun) a state of supreme happiness | Synonyms: beatitude, blessedness |
| beautification | (noun) the act of making something more beautiful | - |
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| biff | (noun) (boxing) a blow with the fist | Synonyms: clout, lick, poke, punch, slug |
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| bifocals | (noun) (plural) eyeglasses having two focal lengths, one for near vision and the other for far vision | - |
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| bifurcation | (noun) the act of splitting into two branches | - |
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| (noun) the place where something divides into two branches | - |
| (noun) a bifurcating branch (one or both of them) | - |
| boniface | (noun) the owner or manager of an inn | Synonyms: host, innkeeper |
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| bountifulness | (noun) the property of copious abundance | Synonyms: amplitude, bounty |
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| caitiff | (noun) a cowardly and despicable person | - |
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| calciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: cholecalciferol, D, ergocalciferol, viosterol, vitamin D |
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| calcification | (noun) a process that impregnates something with calcium (or calcium salts) | - |
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| (noun) tissue hardened by deposition of lime salts | - |
| (noun) an inflexible and unchanging state | - |
| calif | (noun) the civil and religious leader of a Muslim state considered to be a representative of Allah on earth | Synonyms: caliph, kalif, kaliph, khalif, khalifah |
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| californium | (noun) a radioactive transuranic element; discovered by bombarding curium with alpha particles | Synonyms: atomic number 98, Cf |
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| caprifig | (noun) wild variety of the common fig used to facilitate pollination of certain figs | Synonyms: Ficus carica sylvestris |
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| cartilaginification | (noun) abnormal formation of cartilage from other tissues; observed in some Asians | - |
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| cauliflower | (noun) compact head of white undeveloped flowers | - |
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| (noun) a plant having a large edible head of crowded white flower buds | Synonyms: Brassica oleracea botrytis |
| centrifugation | (noun) the process of separating substances of different densities by the use of a centrifuge | - |
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| centrifuge | (noun) an apparatus that uses centrifugal force to separate particles from a suspension | Synonyms: extractor, separator |
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| certificate | (noun) a document attesting to the truth of certain stated facts | Synonyms: certification, credential, credentials |
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| (noun) a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends | Synonyms: security |
| certification | (noun) the act of certifying or bestowing a franchise on | Synonyms: enfranchisement |
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| (noun) validating the authenticity of something or someone | Synonyms: authentication |
| (noun) confirmation that some fact or statement is true through the use of documentary evidence | Synonyms: corroboration, documentation |
| (noun) a document attesting to the truth of certain stated facts | Synonyms: certificate, credential, credentials |
| chairlift | (noun) a ski lift on which riders (skiers or sightseers) are seated and carried up or down a mountainside; seats are hung from an endless overhead cable | Synonyms: chair lift |
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| chiffon | (noun) a sheer fabric of silk or rayon | - |
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| chiffonier | (noun) a tall elegant chest of drawers | Synonyms: commode |
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| chlorpyrifos | (noun) a common organophosphate insecticide | - |
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| cholecalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, D, ergocalciferol, viosterol, vitamin D |
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| clarification | (noun) the act of removing solid particles from a liquid | Synonyms: clearing |
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| (noun) an interpretation that removes obstacles to understanding | Synonyms: elucidation, illumination |
| classification | (noun) the act of distributing things into classes or categories of the same type | Synonyms: assortment, categorisation, categorization, compartmentalisation, compartmentalization |
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| (noun) restriction imposed by the government on documents or weapons that are available only to certain authorized people | - |
| (noun) the basic cognitive process of arranging into classes or categories | Synonyms: categorisation, categorization, sorting |
| (noun) a group of people or things arranged by class or category | Synonyms: categorisation, categorization |
| classified | (noun) a short ad in a newspaper or magazine (usually in small print) and appearing along with other ads of the same type | Synonyms: classified ad, classified advertisement |
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| classifier | (noun) an algorithm that implements classification. | - |
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| (noun) a word or morpheme used in some languages in certain contexts (such as counting) to indicate the semantic class to which the counted item belongs | - |
| (noun) a person who creates classifications | - |
| cliff | (noun) a steep high face of rock | Synonyms: drop-off, drop |
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| cliffhanger | (noun) an episode that ends in suspense | - |
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| (noun) a contest whose outcome is uncertain up to the very end | - |
| codification | (noun) the act of codifying; arranging in a systematic order | - |
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| (noun) a set of rules or principles or laws (especially written ones) | Synonyms: code |
| coif | (noun) a skullcap worn by nuns under a veil or by soldiers under a hood of mail or formerly by British sergeants-at-law | - |
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| (noun) the arrangement of the hair (especially a woman's hair) | Synonyms: coiffure, hair style, hairdo, hairstyle |
| coiffeur | (noun) a man hairdresser | - |
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| coiffeuse | (noun) a woman hairdresser | - |
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| coiffure | (noun) the arrangement of the hair (especially a woman's hair) | Synonyms: coif, hair style, hairdo, hairstyle |
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| complexifier | (noun) someone makes things complex | - |
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| conifer | (noun) any gymnospermous tree or shrub bearing cones | Synonyms: coniferous tree |
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| conspecific | (noun) an organism belonging to the same species as another organism | - |
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| crucifer | (noun) any of various plants of the family Cruciferae | Synonyms: cruciferous plant |
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| crucifix | (noun) a gymnastic exercise performed on the rings when the gymnast supports himself with both arms extended horizontally | - |
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| (noun) representation of the cross on which Jesus died | Synonyms: rood-tree, rood |
| crucifixion | (noun) the act of executing by a method widespread in the ancient world; the victim's hands and feet are bound or nailed to a cross | - |
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| (noun) the infliction of extremely painful punishment or suffering | Synonyms: excruciation |
| cuneiform | (noun) an ancient wedge-shaped script used in Mesopotamia and Persia | - |
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| deadlift | (noun) a weight training exercise in which a loaded barbell is lifted off the ground to the hips, then lowered back to the ground | - |
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| decalcification | (noun) loss of calcium from bones or teeth | - |
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| declassification | (noun) reduction or removal by the government of restrictions on a classified document or weapon | - |
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| dedifferentiation | (noun) the loss of specialization in form or function | - |
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| dehumidifier | (noun) an appliance to extract moisture from the air and make the environment more comfortable | - |
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| deification | (noun) the elevation of a person (as to the status of a god) | Synonyms: apotheosis, exaltation |
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| (noun) an embodiment of the qualities of a god | - |
| (noun) the condition of being treated like a god | - |
| denazification | (noun) social process of removing Nazis from official positions and giving up any allegiance to Nazism | Synonyms: de-Nazification |
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| densification | (noun) an increase in the density of something | Synonyms: compaction, compression, concretion |
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| dentifrice | (noun) a substance for cleaning the teeth; applied with a toothbrush | - |
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| deossification | (noun) the loss of the mineral content of bone tissue | - |
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| desertification | (noun) the gradual transformation of habitable land into desert; is usually caused by climate change or by destructive use of the land | - |
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| detoxification | (noun) treatment for poisoning by neutralizing the toxic properties (normally a function of the liver) | - |
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| (noun) a treatment for addiction to drugs or alcohol intended to remove the physiological effects of the addictive substances | - |
| difference | (noun) the quality of being unlike or dissimilar | - |
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| (noun) a disagreement or argument about something important | Synonyms: conflict, difference of opinion, dispute |
| (noun) a variation that deviates from the standard or norm | Synonyms: departure, deviation, divergence |
| (noun) the number that remains after subtraction; the number that when added to the subtrahend gives the minuend | Synonyms: remainder |
| (noun) a significant change | - |
| differentia | (noun) distinguishing characteristics (especially in different species of a genus) | - |
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| differential | (noun) a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves | Synonyms: differential gear |
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| (noun) a quality that differentiates between similar things | - |
| (noun) the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx | Synonyms: derivative, derived function, differential coefficient, first derivative |
| differentiation | (noun) the mathematical process of obtaining the derivative of a function | - |
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| (noun) a discrimination between things as different and distinct on the basis of their characteristics or attributes | Synonyms: distinction |
| (noun) (biology) the structural adaptation of some body part for a particular function | Synonyms: specialisation, specialization |
| differentiator | (noun) a person who (or that which) differentiates | Synonyms: discriminator |
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| difficultness | (noun) the quality of being almost beyond one's ability to deal with and requiring a great effort to achieve a positive result | Synonyms: difficulty |
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| difficulty | (noun) an effort that is inconvenient | Synonyms: trouble |
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| (noun) the quality of being almost beyond one's ability to deal with and requiring a great effort to achieve a positive result | Synonyms: difficultness |
| diffidence | (noun) lack of self-confidence | Synonyms: self-distrust, self-doubt |
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| difflugia | (noun) a protozoan with an ovoid shell of cemented sand grains | - |
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| diffraction | (noun) when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands | - |
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| diffuseness | (noun) the spatial property of being spread out over a wide area or through a large volume | - |
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| diffuser | (noun) optical device that distributes the light of a lamp evenly | Synonyms: diffusor |
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| (noun) baffle that distributes sound waves evenly | Synonyms: diffusor |
| diffusion | (noun) the act of dispersing or diffusing something | Synonyms: dispersal, dispersion, dissemination |
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| (noun) the property of being diffused or dispersed | Synonyms: dissemination |
| (noun) the spread of social institutions (and myths and skills) from one society to another | - |
| (noun) (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration | - |
| diffusor | (noun) optical device that distributes the light of a lamp evenly | Synonyms: diffuser |
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| (noun) baffle that distributes sound waves evenly | Synonyms: diffuser |
| diflunisal | (noun) nonsteroidal anti-inflammatory (trade name Dolobid) used to treat arthritis and other inflammatory conditions | Synonyms: Dolobid |
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| disqualification | (noun) the act of preventing someone from participating by finding them unqualified | - |
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| (noun) unfitness that bars you from participation | - |
| diversification | (noun) the act of introducing variety (especially in investments or in the variety of goods and services offered) | Synonyms: variegation |
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| (noun) the condition of being varied | - |
| dorsiflexion | (noun) the act of bending backward (of the body or a body part) | - |
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| downshift | (noun) a change to a lower gear in a car or bicycle | - |
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| (noun) a change from a financially rewarding but stressful career to a less well paid but more fulfilling one | - |
| drawknife | (noun) a woodworker's knife to shave surfaces | Synonyms: drawshave |
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