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16-letter words containing l, a, r, o

  • 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.
  • auxiliary police — a part-time reserve attached to a regular police force
  • azuero peninsula — a peninsula in SW Panama, bordered on the E by the Gulf of Panama.
  • 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).
  • backward-looking — If you describe someone or something as backward-looking, you disapprove of their attitudes, ideas, or actions because they are based on old-fashioned opinions or methods.
  • bacterioplankton — (biology) The bacterial component of marine plankton.
  • balance of power — The balance of power is the way in which power is distributed between rival groups or countries.
  • 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.
  • ballroom dancing — Ballroom dancing is a type of dancing in which a man and a woman dance together using fixed sequences of steps and movements.
  • 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.
  • basic vocabulary — the set of lexical items in a language that are most resistant to replacement, referring to the most common and universal elements of human experience, such as parts of the body (foot, eye), universal features of the environment (water, star), common activities (eat, sleep), and the lowest numerals.
  • 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.
  • behavioural sink — a small area in which people or animals live in overcrowded conditions
  • bells of ireland — an annual garden plant, Moluccella laevis, whose flowers have a green cup-shaped calyx: family Lamiaceae (labiates)
  • beneficial owner — a person entitled to receive the profits or proceeds of property
  • 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
  • binocular fusion — fusion (def 5a).
  • binocular-fusion — the act or process of fusing; the state of being fused.
  • 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.
  • bipolar disorder — Bipolar disorder is a mental illness in which a person's state of mind changes between extreme happiness and extreme depression.
  • 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.
  • black chokeberry — See under chokeberry (def 1).
  • black propaganda — propaganda that does not come from the source it claims to come from
  • black woodpecker — a large woodpecker, Dryocopus martius, found in parts of Eurasia and Africa
  • bleaching powder — a white powder with the odour of chlorine, consisting of chlorinated calcium hydroxide with an approximate formula CaCl(OCl).4H2O. It is used in solution as a bleaching agent and disinfectant
  • 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.
  • blue dawn-flower — a tropical American vine, Ipomoea acuminata, of the morning glory family, having large, funnel-shaped flowers that turn from blue to pink.
  • bluegrass region — a region in central Kentucky, famous for its horse farms and fields of bluegrass.
  • boarding kennels — a place where dog owners can pay to have their dogs looked after while they are away
  • bomb calorimeter — a device for determining heats of combustion by igniting a sample in a high pressure of oxygen in a sealed vessel and measuring the resulting rise in temperature: used for measuring the calorific value of foods
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