16-letter words containing a, l, o, t, r
- arteriocapillary — Relating to the arteries and the capillaries.
- arteriosclerosis — Arteriosclerosis is a medical condition in which the walls of your arteries become hard and thick, so your blood cannot flow through them properly.
- arteriosclerotic — degenerative changes in the arteries, characterized by thickening of the vessel walls and accumulation of calcium with consequent loss of elasticity and lessened blood flow.
- arthroscopically — By means of arthroscopy.
- article of faith — If something is an article of faith for a person or group, they believe in it totally.
- article of virtu — an object that it interesting because of its rarity, beauty or appeal to a connoisseur
- artificial blood — a chemical emulsion, capable of carrying oxygen and carbon dioxide, for temporary use as a blood substitute in medical emergencies or when a patient objects to blood transfusions on religious grounds.
- artificial crown — the enamel-covered part of a tooth above the gum
- as a last resort — If you do something as a last resort, you do it because you can find no other way of getting out of a difficult situation or of solving a problem.
- assembly routine — assembler (def 2a).
- astroarchaeology — archaeoastronomy.
- 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
- 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
- atlantic croaker — a person or thing that croaks.
- atrioventricular — of, relating to, or affecting both the atria and the ventricles of the heart
- 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.
- 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.
- autobiographical — An autobiographical piece of writing relates to events in the life of the person who has written it.
- autofluorescence — (biology, microscopy) Self-induced fluorescence.
- automatic redial — a telephone service feature whereby the last number dialed is automatically called again, either after a specified time or when activated by the user.
- autoregressively — In an autoregressive manner.
- bachelor of arts — a degree conferred on a person who has successfully completed his or her undergraduate studies, usually in a branch of the liberal arts or humanities
- bachelor-at-arms — bachelor (def 4).
- bacterioplankton — (biology) The bacterial component of marine plankton.
- balance of trade — A country's balance of trade is the difference in value, over a period of time, between the goods it imports and the goods it exports.
- ballast resistor — ballast (def 5a).
- ballast-resistor — Nautical. any heavy material carried temporarily or permanently in a vessel to provide desired draft and stability.
- balloon catheter — a type of catheter with a tiny, inflatable balloon at the tip, used in various surgical procedures
- balloon mortgage — A balloon mortgage is a mortgage on which the repayments are relatively small until the large final payment.
- baltimore canyon — a submarine valley cut into the continental shelf and slope seaward of Chesapeake Bay.
- baltimore heater — a stove for heating a lower and upper room, having its fire door in the lower room.
- baltimore oriole — a North American oriole, Icterus galbula, the male of which has orange and black plumage
- barclay de tolly — Prince Mikhail (mixaˈil). 1761–1818, Russian field marshal: commander in chief against Napoleon in 1812
- bartholomeu dias — Bartholomeu [bahr-too-loo-me-oo] /ˌbɑr tʊ lʊˈmɛ ʊ/ (Show IPA), c1450–1500, Portuguese navigator: discoverer of the Cape of Good Hope.
- bastard toadflax — any of several low-growing, often parasitic plants of the genus Comandra, having alternate leaves and clusters of small whitish flowers.
- batlle y ordonez — José [haw-se] /hɔˈsɛ/ (Show IPA), 1856–1929, Uruguayan statesman: president of Uruguay 1903–07, 1911–15.
- bermuda palmetto — a palm, Sabal bermudana, of Bermuda, having small, roundish, black fruit and leaves that are checkered beneath.
- bidirectionality — capable of reacting or functioning in two, usually opposite, directions.
- billy goat beard — a man's beard that is long under the chin and shaved elsewhere
- binomial theorem — a mathematical theorem that gives the expansion of any binomial raised to a positive integral power, n. It contains n + 1 terms: (x + a)n = xn + nxn–1a + [n(n–1)/2] xn–2a2 +…+ (nk) xn–kak + … + an, where (nk) = n!/(n–k)!k!, the number of combinations of k items selected from n
- biodegradability — capable of decaying through the action of living organisms: biodegradable paper; biodegradable detergent.
- bioenvironmental — pertaining to the environment of living organisms: Bioenvironmental engineers seek to reduce air and water pollution.
- birthwort family — the plant family Aristolochiaceae, typified by mostly tropical woody vines and herbaceous plants, having alternate, heart-shaped leaves and flowers lacking true petals but having three petallike sepals, and including the birthwort, Dutchman's-pipe, and wild ginger.
- blink comparator — an optical instrument used to detect small differences in two photographs of the same field or object by viewing them alternately, switching rapidly from one to the other.