13-letter words starting with an
- angioplasties — Plural form of angioplasty.
- angiosarcomas — Plural form of angiosarcoma.
- angiospermous — of or relating to an angiosperm; having enclosed seeds.
- angiotensin i — any of three oligopeptides occurring in plasma, an inactive form (angiotensin I) and two varieties (angiotensin II and angiotensin III) that elevate blood pressure and stimulate the adrenal cortex to secrete aldosterone.
- angle bracket — either of a pair of brackets having the shapes < and >
- angle grinder — a handheld power tool with a rotating abrasive disc, used for cutting, grinding and polishing
- angle of bank — the angle between the lateral axis of an aircraft in flight and the horizontal
- angle of lead — the phase difference, expressed in degrees, by which one sinusoidal function is moving ahead of a second having the same period, as alternating voltage moving ahead of the alternating current.
- angle of roll — the acute angle between the lateral axis of an aircraft or spacecraft and a horizontal plane.
- angle of view — the angle that corresponds to the field of view provided by a lens
- anglicisation — The process by which something or someone (usually a word) is made more English. Usually applied to language or culture.
- anglicization — (US) alternative spelling of anglicisation.
- angora rabbit — a breed of rabbit with long usually white silky hair
- Ångstrom unit — a unit of length equal to 10 −10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre
- angular house — any of the four astrological houses that begin at the angles: the first, fourth, seventh, and tenth houses, that correspond, respectively, to self, home, others, and career.
- anharmonicity — (mechanics) Of or pertaining to the deviation of a system from harmonicity (being a harmonic oscillator).
- aniline black — the black dye obtained by the oxidation of aniline hydrochloride, used for dyeing textiles, especially cotton.
- animadversion — criticism or censure
- animadverting — Present participle of animadvert.
- animal rights — People who are concerned with animal rights believe very strongly that animals should not be exploited or harmed by humans.
- animal starch — glycogen.
- animal warden — dogcatcher.
- animalization — to excite the animal passions of; brutalize; sensualize.
- anise camphor — anethole.
- anisometropia — an imbalance in the power of the two eyes to refract light
- anisometropic — relating to anisometropia
- anisophyllous — having leaves of different shapes or sizes.
- ankyloglossia — tongue-tie.
- anna christie — a play (1921) by Eugene O'Neill.
- anna ivanovna — 1693–1740, empress of Russia 1730–40.
- anna karenina — a novel (1875–76) by Leo Tolstoy.
- annexationism — the theory or practice of taking over another country's territory, especially by force.
- annexationist — the theory or practice of taking over another country's territory, especially by force.
- anniversaries — Plural form of anniversary.
- anno hebraico — A.H.
- annona family — the plant family Annonaceae, characterized by tropical trees and shrubs bearing simple alternate leaves, solitary or clustered dull-colored flowers, and edible fruit, and including the cherimoya, custard apple, and sweetsop.
- annotated ada — (language, specification) (Anna) A specification language developed at Stanford University ca. 1980 for formally specifying Ada programs. It has a Specification Analyzer and a Consistency Checking System. It adds semantic assertions in the form of Ada comments.
- announcements — Plural form of announcement.
- annual report — a report presented by the directors of a company to its shareholders each year, containing the profit-and-loss account, the balance sheet, and details of the past year's activity
- annular clock — a clock in the form of a vase, ball, etc., having the hours painted on a ring rotating beneath a pointer.
- annular space — An annular space is a ring-shaped space outside the drillpipe, through which mud and cuttings are removed.
- annunciations — Plural form of annunciation.
- anomalistical — relating to a planet's angular distance from its last perihelion or orbital point nearest to the sun
- anonymization — The act or process of making anonymous, of hiding or disguising identity.
- anonymous ftp — (networking) An interactive service provided by many Internet hosts allowing any user to transfer documents, files, programs, and other archived data using File Transfer Protocol. The user logs in using the special user name "ftp" or "anonymous" and his e-mail address as password. He then has access to a special directory hierarchy containing the publically accessible files, typically in a subdirectory called "pub". This is usually a separate area from files used by local users. A reference like ftp: euagate.eua.ericsson.se /pub/eua/erlang/info means that files are available by anonymous FTP from the host called euagate.eua.ericsson.se in the directory (or file) /pub/eua/erlang/info. Sometimes the hostname will be followed by an Internet address in parentheses. The directory will usually be given as a path relative to the anonymous FTP login directory. A reference to a file available by FTP may also be in the form of a URL starting "ftp:". See also Archie, archive site, EFS, FTP by mail, web.
- anonymousness — without any name acknowledged, as that of author, contributor, or the like: an anonymous letter to the editor; an anonymous donation.
- another place — the other House of Parliament (used in the House of Commons to refer to the House of Lords and vice versa)
- another-guess — of another kind.
- answerability — liable to be asked to give account; responsible: He is answerable to a committee for all his decisions.
- antarctictite — (mineral) A saline evaporite consisting of calcium chloride, CaCl.6H2O, found in Victoria Land, Antarctica.