| agrarian | (adjective) relating to farming or agriculture | Synonyms: agricultural, farming |
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| agromania | (noun) an intense desire to be alone or out in the open | - |
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| ailanthus | (noun) any of several deciduous Asian trees of the genus Ailanthus | - |
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| aircraftman | (noun) a noncommissioned officer in the British Royal Air Force | Synonyms: aircraftsman |
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| aircraftsman | (noun) a noncommissioned officer in the British Royal Air Force | Synonyms: aircraftman |
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| aircrewman | (noun) a member of an aircrew | - |
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| airman | (noun) a male who operates an aircraft | - |
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| airmanship | (noun) the art of operating aircraft | Synonyms: aviation |
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| airplane | (noun) an aircraft that has a fixed wing and is powered by propellers or jets | Synonyms: aeroplane, plane |
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| airwoman | (noun) a woman aviator | Synonyms: aviatress, aviatrix |
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| alanine | (noun) a crystalline amino acid that occurs in many proteins | - |
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| alderman | (noun) a member of a municipal legislative body (as a city council) | - |
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| aldermanic | (adjective) of or relating to or like an alderman | Synonyms: aldermanly |
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| aldermanly | (adjective) of or relating to or like an alderman | Synonyms: aldermanic |
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| alexandrite | (noun) a green variety of chrysoberyl used as a gemstone | - |
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| aliquant | (noun) an integer that is not an exact divisor of some quantity | Synonyms: aliquant part |
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| alkane | (noun) a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2) | Synonyms: alkane series, methane series, paraffin, paraffin series |
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| alkanet | (noun) perennial or biennial herb cultivated for its delicate usually blue flowers | Synonyms: Anchusa officinalis, bugloss |
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| allamanda | (noun) a plant of the genus Allamanda having large showy funnel-shaped flowers in terminal cymes | - |
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| allantoic | (adjective) relating to or characterized by an allantois | - |
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| allantoid | (adjective) shaped like a sausage | Synonyms: sausage-shaped |
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| allantois | (noun) the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals) | - |
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| allargando | (adjective) (music) gradually decreasing in tempo and broadening in manner | - |
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| allegiance | (noun) the act of binding yourself (intellectually or emotionally) to a course of action | Synonyms: commitment, dedication, loyalty |
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| (noun) the loyalty that citizens owe to their country (or subjects to their sovereign) | Synonyms: fealty |
| allegiant | (adjective) steadfast in devotion (especially to your lawful monarch or government) | - |
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| allemande | (noun) egg-thickened veloute | Synonyms: allemande sauce |
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| alleviant | (noun) remedy that alleviates pain without curing | Synonyms: alleviator, palliative |
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| alliance | (noun) the act of forming an alliance or confederation | Synonyms: confederation |
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| (noun) a formal agreement establishing an association or alliance between nations or other groups to achieve a particular aim | - |
| (noun) an organization of people (or countries) involved in a pact or treaty | Synonyms: alignment, alinement, coalition |
| (noun) a connection based on kinship or marriage or common interest | Synonyms: bond |
| (noun) the state of being allied or confederated | Synonyms: confederation |
| alloantibody | (noun) an antibody that occurs naturally against foreign tissues from a person of the same species | Synonyms: isoantibody |
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| allowance | (noun) the act of allowing | - |
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| (noun) a permissible difference; allowing some freedom to move within limits | Synonyms: leeway, margin, tolerance |
| (noun) an amount allowed or granted (as during a given period) | - |
| (noun) an amount added or deducted on the basis of qualifying circumstances | Synonyms: adjustment |
| (noun) a sum granted as reimbursement for expenses | - |
| (noun) a reserve fund created by a charge against profits in order to provide for changes in the value of a company's assets | Synonyms: allowance account, valuation account, valuation reserve |
| (verb) put on a fixed allowance, as of food | - |
| almanac | (noun) an annual publication containing tabular information in a particular field or fields arranged according to the calendar of a given year | - |
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| (noun) an annual publication including weather forecasts and other miscellaneous information arranged according to the calendar of a given year | Synonyms: farmer's calendar |
| almandine | (noun) a purple variety of the ruby spinel | - |
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| (noun) a deep red garnet consisting of iron aluminum silicate | Synonyms: almandite |
| almandite | (noun) a deep red garnet consisting of iron aluminum silicate | Synonyms: almandine |
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| alphanumeric | (adjective) of or pertaining to alphanumeric characters | Synonyms: alphameric, alphamerical, alphanumerical |
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| alphanumerical | (adjective) of or pertaining to alphanumeric characters | Synonyms: alphameric, alphamerical, alphanumeric |
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| alphanumerics | (noun) a character set that includes letters and digits and punctuation | Synonyms: alphanumeric characters |
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| alsatian | (noun) breed of large shepherd dogs used in police work and as a guide for the blind | Synonyms: German police dog, German shepherd, German shepherd dog |
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| amanuensis | (noun) someone skilled in the transcription of speech (especially dictation) | Synonyms: shorthand typist, stenographer |
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| amaranth | (noun) any of various plants of the genus Amaranthus having dense plumes of green or red flowers; often cultivated for food | - |
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| (noun) seed of amaranth plants used as a native cereal in Central and South America | - |
| amaranthine | (adjective) of or related to the amaranth plant | - |
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| (adjective) of an imaginary flower that never fades | Synonyms: unfading |
| ambiance | (noun) the atmosphere of an environment | Synonyms: ambience |
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| (noun) a particular environment or surrounding influence | Synonyms: ambience, atmosphere |
| ambrosian | (adjective) worthy of the gods | Synonyms: ambrosial |
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| (adjective) extremely pleasing to the taste; sweet and fragrant | Synonyms: ambrosial, nectarous |
| ambulance | (noun) a vehicle that takes people to and from hospitals | - |
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| ambulant | (adjective) able to walk about | Synonyms: ambulatory |
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| ameban | (adjective) pertaining to or resembling amoebae | Synonyms: amebic, amebous, amoeban, amoebic, amoebous |
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| aminoalkane | (noun) a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals | Synonyms: amine |
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| aminomethane | (noun) a methyl with the hydrogen atom replaced by an amino radical | - |
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| aminotransferase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminopherase, transaminase |
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| amoeban | (adjective) pertaining to or resembling amoebae | Synonyms: ameban, amebic, amebous, amoebic, amoebous |
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| ampersand | (noun) a punctuation mark (&) used to represent conjunction (and) | - |
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| amphibian | (adjective) relating to or characteristic of animals of the class Amphibia | Synonyms: amphibious |
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| (noun) cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form | - |
| (noun) an airplane designed to take off and land on water | Synonyms: amphibious aircraft |
| (noun) a flat-bottomed motor vehicle that can travel on land or water | Synonyms: amphibious vehicle |
| ana | (noun) a collection of anecdotes about a person or place | - |
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| anabatic | (adjective) of an air current or wind; rising especially up a slope | - |
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| anabiosis | (noun) suspended animation in organisms during periods of extreme drought from which they revive when moisture returns | - |
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| anabiotic | (adjective) of or related to the state of anabiosis | - |
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| anabolic | (adjective) characterized by or promoting constructive metabolism | - |
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| (adjective) of or related to the synthetic phase of metabolism | - |
| anabolism | (noun) the synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy | Synonyms: constructive metabolism |
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| anachronic | (adjective) chronologically misplaced | Synonyms: anachronistic, anachronous |
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| anachronism | (noun) an artifact that belongs to another time | - |
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| (noun) a person who seems to be displaced in time; who belongs to another age | - |
| (noun) something located at a time when it could not have existed or occurred | Synonyms: misdating, mistiming |
| anachronistic | (adjective) chronologically misplaced | Synonyms: anachronic, anachronous |
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| anachronistically | (adverb) in an anachronistic manner | - |
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| anachronous | (adjective) chronologically misplaced | Synonyms: anachronic, anachronistic |
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| anaclinal | (adjective) of valleys and rivers; progressing in a direction opposite to the dip in surrounding rock strata | - |
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| anaclisis | (noun) (psychoanalysis) relationship marked by strong dependence on others; especially a libidinal attachment to e.g. a parental figure | - |
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| anaclitic | (adjective) of or related to relationships that are characterized by the strong dependence of one person on another | - |
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| anacoluthia | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthon |
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| anacoluthic | (adjective) of or related to syntactic inconsistencies of the sort known as anacoluthons | - |
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| anacoluthon | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthia |
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| anaconda | (noun) large arboreal boa of tropical South America | Synonyms: Eunectes murinus |
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| anadiplosis | (noun) repetition of the final words of a sentence or line at the beginning of the next | Synonyms: reduplication |
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| anadromous | (adjective) migrating from the sea to fresh water to spawn | - |
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| anaemia | (noun) a deficiency of red blood cells | Synonyms: anemia |
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| (noun) a lack of vitality | Synonyms: anemia |
| anaemic | (adjective) relating to anemia or suffering from anemia | Synonyms: anemic |
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| (adjective) lacking vigor or energy | Synonyms: anemic |
| anaerobe | (noun) an organism (especially a bacterium) that does not require air or free oxygen to live | - |
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| anaerobic | (adjective) living or active in the absence of free oxygen | Synonyms: anaerobiotic |
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| (adjective) not aerobic | - |
| anaerobiotic | (adjective) living or active in the absence of free oxygen | Synonyms: anaerobic |
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| anaesthesia | (noun) loss of bodily sensation with or without loss of consciousness | Synonyms: anesthesia |
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| anaesthetic | (adjective) relating to or producing insensibility | Synonyms: anesthetic |
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| (adjective) characterized by insensibility | Synonyms: anesthetic |
| (noun) a drug that causes temporary loss of bodily sensations | Synonyms: anaesthetic agent, anesthetic, anesthetic agent |
| anaesthetise | (verb) administer an anesthetic drug to | Synonyms: anaesthetize, anesthetise, anesthetize, put out, put under |
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| anaesthetist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anesthesiologist, anesthetist |
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| anaesthetize | (verb) administer an anesthetic drug to | Synonyms: anaesthetise, anesthetise, anesthetize, put out, put under |
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| anaglyph | (noun) anything carved in low relief | - |
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| (noun) moving or still pictures in contrasting colors that appear three-dimensional when superimposed | - |
| anaglyphic | (adjective) related to anaglyphs or anaglyphy | Synonyms: anaglyphical, anaglyptic, anaglyptical |
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| anaglyphical | (adjective) related to anaglyphs or anaglyphy | Synonyms: anaglyphic, anaglyptic, anaglyptical |
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| anaglyphy | (noun) the process of producing pictures in contrasting colors that appear three-dimensional when superimposed and viewed through spectacles with one red and one green lens | - |
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| anaglyptic | (adjective) related to anaglyphs or anaglyphy | Synonyms: anaglyphic, anaglyphical, anaglyptical |
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| anaglyptical | (adjective) related to anaglyphs or anaglyphy | Synonyms: anaglyphic, anaglyphical, anaglyptic |
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| anagnost | (noun) a cleric in the minor orders of the Eastern Orthodox Church who reads the lessons aloud in the liturgy (analogous to the lector in the Roman Catholic Church) | - |
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| anagoge | (noun) a mystical or allegorical interpretation (especially of Scripture) | - |
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| anagogic | (adjective) based on or exemplifying anagoge | Synonyms: anagogical |
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| anagogical | (adjective) based on or exemplifying anagoge | Synonyms: anagogic |
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| anagram | (noun) a word or phrase spelled by rearranging the letters of another word or phrase | - |
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| (verb) read letters out of order to discover a hidden meaning | Synonyms: anagrammatise, anagrammatize |
| anagrammatic | (adjective) related to anagrams or containing or making an anagram | Synonyms: anagrammatical |
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| anagrammatical | (adjective) related to anagrams or containing or making an anagram | Synonyms: anagrammatic |
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| anagrammatise | (verb) read letters out of order to discover a hidden meaning | Synonyms: anagram, anagrammatize |
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| anagrammatize | (verb) read letters out of order to discover a hidden meaning | Synonyms: anagram, anagrammatise |
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| anagrams | (noun) a game whose object is to form words from a group of randomly chosen letters | - |
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| anal | (adjective) a stage in psychosexual development when the child's interest is concentrated on the anal region; fixation at this stage is said to result in orderliness, meanness, stubbornness, compulsiveness, etc. | Synonyms: anal retentive |
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| (adjective) of or related to the anus | - |
| analbuminemia | (noun) an abnormally low level of albumin in the blood serum | - |
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| analecta | (noun) a collection of excerpts from a literary work | Synonyms: analects |
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