Definitions from Wiktionary (Ac)

▸ noun:  (electricity, informal, by extension) supply of electric energy via a public electricity grid
▸ noun:  (Australia) Companion of the Order of Australia.
▸ noun:  Aceh, an autonomous province of Indonesia.
▸ noun:  Acre, a state of Brazil.
▸ noun:  account; money of account
▸ noun:  alicyclic
▸ adjective:  (medicine) ante cibum, before meals
▸ noun:  (slang, African-American Vernacular) The Acura Legend automobile.
▸ noun:  (aviation) Initialism of absolute ceiling. [(aviation) The maximum altitude above sea level that an aircraft or missile can maintain horizontal flight under normal conditions.]
▸ noun:  Initialism of access control. [The practice of restricting entrance to a property, a building, or a room to authorized persons.]
▸ noun:  (finance) Initialism of account current. [(finance) A regularly updated record of transactions between two parties showing what is owed or due to each party or a statement summarizing the position.]
▸ noun:  (anatomy) Initialism of anterior chamber. [(anatomy, ophthalmology) A space inside the eye between the cornea and the iris, filled with aqueous humour.]
▸ noun:  (music, radio) Initialism of adult contemporary (a radio format). [A category of music including soft rock, ballads, easy listening, soul, and rhythm and blues.]
▸ noun:  (biochemistry) Initialism of adenylyl cyclase.
▸ noun:  (medicine) Initialism of adjuvant chemotherapy.
▸ noun:  Initialism of air conditioning. [The state of temperature and humidity produced by an air conditioner.]
▸ noun:  Initialism of air corps.
▸ noun:  Initialism of aircraftman. [A member of the lowest rank in the Royal Air Force or the air forces of various other Commonwealth countries.]
▸ noun:  (electricity) Initialism of alternating current (often used to indicate an alternating potential rather than a current). [(physics) An electric current in which the direction of flow of the electrons reverses periodically.]
▸ noun:  Initialism of area code. [(US, Australia, Philippines) A prefix appended to a telephone number indicating the geographical area.]
▸ noun:  Initialism of army corps.
▸ noun:  Initialism of athletic club.
▸ noun:  Initialism of author's correction.
▸ noun:  Initialism of automobile club.
▸ noun:  (US, military) Initialism of Auxiliary Collier (a naval coal transport that travels with the fleet to provide coal for coal-powered warships).
▸ noun:  (set theory) Initialism of axiom of choice. [(set theory) One of the axioms of set theory, equivalent to the statement that an arbitrary direct product of non-empty sets is non-empty; any version of said axiom, for example specifying the cardinality of the number of sets from which choices are made.]
▸ noun:  (UK, law enforcement) Initialism of assistant commissioner, a police rank used in London's Metropolitan Police.
▸ noun:  Initialism of aviation cadet.
▸ noun:  (chemistry) Initialism of ammonium chloride. [(inorganic chemistry) A water-soluble salt of ammonia and hydrochloric acid, having the formula NH₄Cl.]
▸ noun:  (geography) Initialism of autonomous county.
▸ noun:  (roleplaying games) Initialism of armor class.
▸ noun:  (prison) Initialism of administrative custody.
▸ adjective:  (anatomy, medicine) Initialism of acromioclavicular. [(anatomy) Pertaining to both the acromion and the clavicle.]
▸ adjective:  Initialism of air conditioned.
▸ adjective:  (religion) Initialism of antichristian. [Pertaining to Antichrist.]
▸ adverb:  Initialism of anno Christi (in the year of Christ).
▸ adverb:  Initialism of ante Christum, (before Christ).
▸ noun:  Initialism of America's Cup (competition yacht sailing match racing regatta). [A sailing regatta between two yachts, usually held every three or four years.]
▸ noun:  Abbreviation of acre. [An English unit of land area (symbol: a. or ac.) originally denoting a day's ploughing for a yoke of oxen, now standardized as 4,840 square yards or 4,046.86 square metres.]
▸ noun:  Alternative letter-case form of AC (“air conditioning”) [(electricity, informal, by extension) supply of electric energy via a public electricity grid]
▸ noun:  (electricity) Alternative letter-case form of AC (“alternating current”) [(electricity, informal, by extension) supply of electric energy via a public electricity grid]
▸ noun:  Initialism of air-conditioning.
▸ noun:  (meteorology) Initialism of altocumulus cloud.
▸ noun:  Abbreviation of acetate. [(organic chemistry) Any ester or salt of acetic acid.]
▸ noun:  Abbreviation of acetyl. [(organic chemistry) The univalent radical CH₃CO- derived from acetic acid.]

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