13-letter words containing t, h, o
- arachnoiditis — an inflammation of the arachnoid membrane
- archaeobotany — the analysis and interpretation of plant remains found at archaeological sites
- archaeologist — a specialist in archaeology, the scientific study of prehistoric peoples and their cultures by analysis of their artifacts, inscriptions, monuments, etc.
- archaeometric — relating to archaeometry
- archaeopteryx — any of several extinct primitive birds constituting the genus Archaeopteryx, esp A. lithographica, which occurred in Jurassic times and had teeth, a long tail, well-developed wings, and a body covering of feathers
- archeologists — archaeology.
- archeptolemus — (in the Iliad) the son of Iphitus who served as a charioteer for Hector.
- architectonic — denoting, relating to, or having architectural qualities
- aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
- arithmophobia — the fear of numbers
- arteriography — the X-ray examination of an artery or arterial system after injection of a contrast medium into the bloodstream
- arthroconidia — Plural form of arthroconidium.
- arthroscopies — Plural form of arthroscopy.
- ashtanga yoga — a vigorous form of yoga involving a sequence of poses
- associateship — to connect or bring into relation, as thought, feeling, memory, etc.: Many people associate dark clouds with depression and gloom.
- asthenosphere — a thin semifluid layer of the earth (100–200 km thick), below the outer rigid lithosphere, forming part of the mantle and thought to be able to flow vertically and horizontally, enabling sections of lithosphere to subside, rise, and undergo lateral movement
- astonishingly — causing astonishment or surprise; amazing: an astonishing victory; an astonishing remark.
- astonishments — Plural form of astonishment.
- astrophysical — Of or pertaining to astrophysics.
- at the double — at twice normal marching speed
- at this point — at this moment in time
- athenagoras i — (Aristocles Spyrou) 1886–1972, Archbishop Ecumenical of Constantinople and Ecumenical Patriarch of the Greek Orthodox Church 1948–72.
- atherogenesis — (medicine) The formation of atheromas, especially on the walls of the arteries.
- athletic shoe — a shoe designed to be worn for sports, exercising, or recreational activity, as racquetball, jogging, or aerobic dancing.
- atmospherical — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
- atomic theory — any theory in which matter is regarded as consisting of atoms, esp that proposed by John Dalton postulating that elements are composed of atoms that can combine in definite proportions to form compounds
- atomic weight — the weight of one atom of an element expressed in atomic mass units: it is the average weight of all the isotopes of the element
- auction house — a commercial company that specializes in selling items at auction
- auction pitch — a variety of all fours in which players bid to determine the trump or pitch.
- autapomorphic — (biology) Describing any characteristic that has evolved in only a single species (or other taxon).
- auteur theory — the theory that creative directors are the major force in film-making
- authenticator — a person or thing that authenticates.
- authorisation — Alternative spelling of authorization.
- authoritarian — If you describe a person or an organization as authoritarian, you are critical of them controlling everything rather than letting people decide things for themselves.
- authoritative — Someone or something that is authoritative gives an impression of power and importance and is likely to be obeyed.
- authorization — an authorizing or being authorized
- autobiography — Your autobiography is an account of your life, which you write yourself.
- autocatharsis — a therapeutic process designed to free unconscious disturbances by having the patient write about his or her experiences, impressions, etc.
- autocephalous — (of an Eastern Christian Church) governed by its own national synods and appointing its own patriarchs or prelates
- autochthonous — (of rocks, deposits, etc) found where they and their constituents were formed
- autographical — Relating to, or used in, the process of autography.
- automatograph — a device for recording involuntary bodily movements.
- automechanism — an automatic mechanical system or component, especially a device that operates automatically under predetermined conditions.
- autorickshaws — Plural form of autorickshaw.
- autoschediasm — anything done with little forethought or preparation
- autoschediaze — to do or act with little forethought or preparation
- baal shem tov — original name Israel ben Eliezer ?1700–60, Jewish religious leader, teacher, and healer in Poland: founder of modern Hasidism
- baal-shem-tov — (Israel ben Eliezer"Besht") c1700–60, Ukrainian teacher and religious leader: founder of the Hasidic movement of Judaism.
- bachelor flat — a flat lived in, or intended for a bachelor
- bachelorettes — Plural form of bachelorette.