16-letter words containing o, t
- as likely as not — very probably
- ascidian tadpole — the free-swimming larva of an ascidian, having a tadpole-like tail containing the notochord and nerve cord
- assembly routine — assembler (def 2a).
- assimilationists — Plural form of assimilationist.
- assistant editor — a person who assists an editor in their work
- associate degree — An associate degree is a college degree that is awarded to a student who has completed a two-year course of study.
- associate member — a person who is a member of a club, organization etc. but has only partial rights and privileges or subordinate status
- associated state — a nation with limited sovereignty, especially a former colony that now assumes responsibility for domestic affairs but continues to depend on the colonial ruler for defense and foreign policy.
- association area — any of the regions of the cerebral cortex of the brain connected by numerous nerve fibers to all parts of both cerebral hemispheres and coordinating such higher activities as learning and reasoning.
- associationistic — Of or pertaining to associationism.
- aston dark space — the dark region between the cathode and the cathode glow in a vacuum tube, occurring when the pressure is low.
- astroarchaeology — archaeoastronomy.
- astroengineering — (scifi) The construction of megastructures in space by technologically advanced beings.
- astrometeorology — the study of the theoretical effects of astronomical bodies and forces on the earth's atmosphere.
- astronomer royal — an honorary title awarded to an eminent British astronomer: until 1972, the Astronomer Royal was also director of the Royal Greenwich Observatory
- astrophotography — the photography of celestial bodies used in astronomy
- asymptomatically — showing no evidence of disease.
- at bayonet point — done while having a bayonet pointed at one
- at full throttle — If you say that something is done at full throttle, you mean that it is done with great speed and enthusiasm.
- at liberty to do — If someone is at liberty to do something, they have been given permission to do it.
- at one's leisure — when one has free time
- atherothrombotic — (medicine) Pertaining to or caused by atherothrombosis, the sudden disruption of an atherosclerotic plaque.
- atlantic croaker — a person or thing that croaks.
- atmospheric tide — a movement of atmospheric masses caused by the gravitational attraction of the sun and moon and by daily solar heating.
- atomic mass unit — a unit of mass used to express atomic and molecular weights that is equal to one twelfth of the mass of an atom of carbon-12. It is equivalent to 1.66 × 10–27 kg
- atomic physicist — a scientist specializing in atomic physics
- atomic structure — the concept of an atom as a central positively charged nucleus consisting of protons and neutrons surrounded by a number of electrons. The number of electrons is equal to the number of protons: the whole entity is thus electrically neutral
- atrioventricular — of, relating to, or affecting both the atria and the ventricles of the heart
- attendance order — (in Britain) an order issued by a court requiring a young offender to attend a specified place at specified times in order to carry out unpaid work, usually as an alternative to being fined
- attitude of mind — Your attitude of mind is your general way of thinking and feeling.
- attitude problem — a frame of mind perceived by others to be hostile or uncooperative
- attorney general — A country's Attorney General is its chief law officer, who advises its government or ruler.
- attorney-in-fact — a person authorized by power of attorney to act on the authorizer's behalf outside a court of law.
- attributive noun — a noun that occurs before and modifies another noun, as toy in toy store or tour in tour group.
- atwood's machine — a device consisting of two unequal masses connected by a string passed over a pulley, used to illustrate the laws of motion.
- auction pinochle — a variety of pinochle for three to five players in which, for every hand, there are three active players, each dealt 15 cards, with the highest bidder winning the contract and playing against the other two active opponents.
- auditory aphasia — aphasia in which there is no comprehension of spoken words; word deafness.
- auditory vesicle — the pouch that is formed by the invagination of an ectodermal placode and that develops into the internal ear.
- aurora australis — the aurora seen around the South Pole
- australopithecus — an extinct genus of small-brained,large-toothed bipedal hominids that lived in Africa between one and four million years ago.
- austro-hungarian — of or relating to the Dual Monarchy of Austria-Hungary (1867–1918)
- authentification — The process of making, or establishing as, authentic.
- authoritarianism — Authoritarianism is the state of being authoritarian or the belief that people with power, especially the State, have the right to control other people's actions.
- authority figure — a person whose real or apparent authority over others inspires or demands obedience and emulation: Parents, teachers, and police officers are traditional authority figures for children.
- autobiographical — An autobiographical piece of writing relates to events in the life of the person who has written it.
- autobogotiphobia — bogotify
- autodidactically — a person who has learned a subject without the benefit of a teacher or formal education; a self-taught person.
- autoethnographic — Using ethnographic techniques to describe one's own life, or events in which one is a participant.
- autofluorescence — (biology, microscopy) Self-induced fluorescence.
- autoimmunization — antibody production by an organism in response to and against any of its own tissues, cells, or cell components.