12-letter words containing a, c, t, s, o
- anorthositic — resembling or consisting of anorthosite
- ansate cross — ankh
- antagonistic — If a person is antagonistic to someone or something, they show hatred or dislike towards them.
- anthocarpous — resembling or pertaining to an anthocarp
- anthocyanins — Plural form of anthocyanin.
- anticathodes — Plural form of anticathode.
- antichthones — the antipodes
- anticonsumer — opposed to consumerism
- anticyclones — Plural form of anticyclone.
- antinucleons — Plural form of antinucleon.
- antiochus iv — ?215–164 bc, Seleucid king of Syria (175–164), who attacked the Jews and provoked the revolt of the Maccabees
- antipolitics — the rejection of party and electoral politics
- antisociable — Antisocial.
- antisocially — In an antisocial manner.
- antistrophic — Of or pertaining to an antistrophe.
- aphoristical — Alternative form of aphoristic.
- apocalyptist — the writer of the Apocalypse or a related work
- apostolicity — the quality of being apostolic
- apothecaries — Plural form of apothecary.
- applications — Plural form of application.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- arc cosecant — the angle, measured in radians, that has a cosecant equal to a given number. Symbol: csc −1. Abbreviation: arc csc;
- arch support — a rigid support placed inside a shoe so that its molded form fits the arch of the foot and relieves strain on the muscles of the foot while walking, standing, etc.
- archenterons — Plural form of archenteron.
- archeologist — archaeology.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- arctophilist — a collector of teddy bears
- aristocratic — Aristocratic means belonging to or typical of the aristocracy.
- aristolochia — any of various plants of the genus Aristolochia of the family Aristolochiaceae
- aristophanic — 448?–385? b.c, Athenian comic dramatist.
- arms control — an agreement between two or more countries to reduce the number of weapons owned, with the aim of preventing war
- arson attack — an attack when property is set fire to
- arthroscopes — Plural form of arthroscope.
- arthroscopic — the use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.
- articulators — Plural form of articulator.
- artiodactyls — Plural form of artiodactyl.
- arts council — an organization that provides funding for a variety of arts activities
- ascensionist — a person who has completed a mountain ascent, esp a notable one
- ascomycetous — belonging or pertaining to the Ascomycota.
- aspect ratio — the ratio of width to height of the picture on a television or cinema screen
- asphalt rock — a rock formation, usually of limestone or sandstone, containing large amounts of bitumens.
- associations — Plural form of association.
- assuefaction — the condition of being or becoming familiar with or used to something
- astacologist — a person who investigates and analyses crayfish
- astigmoscope — astigmatoscope.
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- astrocompass — a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
- astrocytomas — Plural form of astrocytoma.
- astrodynamic — Pertaining to astrodynamics.
- astrological — the study that assumes and attempts to interpret the influence of the heavenly bodies on human affairs.