10-letter words containing a, s
- arbitrates — Third-person singular simple present indicative form of arbitrate.
- arboresque — a tree.
- arboretums — Plural form of arboretum.
- arbuscular — relating to, or similar to, arbuscles
- arc cosine — Trigonometry. the angle, measured in radians, that has a cosine equal to a given number. Symbol: cos −1. Abbreviation: arc cos;
- arc secant — the angle, measured in radians, that has a secant equal to a given number. Symbol: sec −1. Abbreviation: arc sec;
- arc second — Astronomy. second2 (def 4).
- arcesilaus — 316–241 b.c, Greek philosopher.
- archaicism — an archaism
- archaistic — something archaic, as a word or expression.
- archangels — Plural form of archangel.
- archbishop — In the Roman Catholic, Orthodox, and Anglican Churches, an archbishop is a bishop of the highest rank, who is in charge of all the bishops and priests in a particular country or region.
- archemorus — Opheltes.
- archerfish — any freshwater percoid fish of the family Toxotidae of S and SE Asia and Australia, esp Toxotes jaculatrix, that catch insects by spitting water at them
- archespore — the cell or group of cells in a sporangium that gives rise to spores
- archetypes — the original pattern or model from which all things of the same kind are copied or on which they are based; a model or first form; prototype.
- archfiends — Plural form of archfiend.
- archiblast — egg protoplasm
- archimedes — ?287–212 bc, Greek mathematician and physicist of Syracuse, noted for his work in geometry, hydrostatics, and mechanics
- archiplasm — archoplasm
- architects — Plural form of architect.
- archivists — Plural form of archivist.
- archivolts — Plural form of archivolt.
- archoplasm — the protoplasmic material surrounding the centrosome, formerly thought to be involved in the formation of the asters and spindle during mitosis
- archosaurs — Plural form of archosaur.
- archpriest — (formerly) a chief assistant to a bishop, performing many of his sacerdotal functions during his absence
- archrivals — Plural form of archrival.
- arciniegas — Germán [her-mahn] /hɛrˈmɑn/ (Show IPA), 1900–1999, Colombian author, editor, and diplomat.
- arcosolium — (in Roman catacombs) an arched recess for a sarcophagus.
- arcubalist — an arbalest
- area study — anthropological or sociological research intended to gather and relate data on various aspects of a geographical region and its inhabitants, as natural resources, history, language, institutions, or cultural and economic characteristics; a field investigation into human ecology.
- areligious — unconcerned with or indifferent to religious matters.
- arenaceous — (of sedimentary rocks and deposits) composed of sand or sandstone
- arenavirus — any of various RNA-containing viruses of the family Arenaviridae, usually transmitted to humans by contact with excreta of infected rodents.
- argenteous — silvery.
- argus-eyed — keen-sighted; observant; vigilant
- arguteness — acuteness of mind
- ariovistus — flourished c71–58 b.c, Germanic leader of the Suevi.
- aristippus — ?435–?356 bc, Greek philosopher, who believed pleasure to be the highest good and founded the Cyrenaic school
- aristocrat — An aristocrat is someone whose family has a high social rank, especially someone who has a title.
- aristology — the art of eating
- aristotype — a process of photographic printing in which paper coated with silver chloride in gelatin is used.
- armadillos — Plural form of armadillo.
- armigerous — of, having, or entitled to have a coat of arms
- armistices — a temporary suspension of hostilities by agreement of the warring parties; truce: World War I ended with the armistice of 1918.
- armourless — having no armour
- arms cache — a hidden store of weapons
- army corps — a military formation that comprises two or more divisions and additional support arms
- army-issue — given to soldiers in order to help them carry out their duties
- arquebuses — Plural form of arquebuse.