12-letter words containing h, o, t, i
- anticathodes — Plural form of anticathode.
- antichthones — the antipodes
- antihalation — a process by which light, passing through the emulsion on a film or plate, is not reflected back into it but is absorbed by a layer of dye or pigment, usually on the back of the film, thus preventing halation
- antihydrogen — hydrogen in which the nucleus is an antiproton with an orbiting positron
- antimonarchy — Opposing a monarchy.
- antiochus iv — ?215–164 bc, Seleucid king of Syria (175–164), who attacked the Jews and provoked the revolt of the Maccabees
- antiphonally — In an antiphonal manner; in the manner of an antiphon.
- antiphonical — Alternative form of antiphonic.
- antipoaching — acting against or opposed to poaching
- antique shop — a shop where antiques are sold
- antistrophes — Plural form of antistrophe.
- antistrophic — Of or pertaining to an antistrophe.
- antistrophon — an argument that is retorted against an opponent
- antithrombin — a substance that counteracts the action of thrombin, preventing the formation of blood clots
- aortographic — relating to an aortography or aortography
- aphoristical — Alternative form of aphoristic.
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- apostrophise — to address by apostrophe.
- apostrophize — to address an apostrophe to
- apothecaries — Plural form of apothecary.
- apothegmatic — Relating to, or in the manner of, an apothegm; sententious; pithy.
- apotheosized — Simple past tense and past participle of apotheosize.
- archaization — Process of becoming or turning something more archaic.
- archegoniate — having archegonia
- 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
- aristolochia — any of various plants of the genus Aristolochia of the family Aristolochiaceae
- aristophanes — ?448–?380 bc, Greek comic dramatist, who satirized leading contemporary figures such as Socrates and Euripides. Eleven of his plays are extant, including The Clouds, The Frogs, The Birds, and Lysistrata
- aristophanic — 448?–385? b.c, Athenian comic dramatist.
- arithmomania — an obsessive desire to count objects, or a fixation with numbers and calculations
- arteriopathy — Any disease of the arteries.
- arthropathic — disease of the joints.
- arthroscopic — the use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.
- arthrotomies — Plural form of arthrotomy.
- asphyxiation — Asphyxiation is a lack of oxygen in blood, which causes suffocation.
- astonishable — (obsolete) Astonishing.
- astonishment — Astonishment is a feeling of great surprise.
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- astrophysics — Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space.
- atheological — having an aversion or resistance to theology
- atheoretical — having no connection with and not founded on theory
- athrocytosis — the capability of a cell to receive and store matter
- atmospherics — Atmospherics are elements in something such as a piece of music or a book which create a certain atmosphere.
- atmospherium — an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
- attorneyship — The office or profession of an attorney.
- atychiphobia — (rare) The fear of failure.
- australopith — (archaeology, anthropology, paleonotology) Of or pertaining to the extinct hominid primates, of the genus Australopithecus, from the Pleistocene period.
- authorizable — able to be authorized
- autochthonic — pertaining to autochthons; aboriginal; indigenous (opposed to heterochthonous).