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16-letter words containing n

  • biodeterioration — biodegradation.
  • bioenvironmental — pertaining to the environment of living organisms: Bioenvironmental engineers seek to reduce air and water pollution.
  • biofortification — the process of breeding staple crops to have higher levels of essential nutrients, either through selective breeding or genetic modification: iron biofortification of rice; biofortification of wheat with zinc.
  • biomagnification — biological magnification.
  • biotechnological — Biotechnological means relating to biotechnology.
  • biotic potential — the capacity of a population of organisms to increase in numbers under optimum environmental conditions.
  • birchbark biting — a Native Canadian craft in which designs are bitten onto bark from birch trees
  • bird in the hand — any warm-blooded vertebrate of the class Aves, having a body covered with feathers, forelimbs modified into wings, scaly legs, a beak, and no teeth, and bearing young in a hard-shelled egg.
  • bird of ill omen — a person who brings bad news.
  • bird's-nest fern — a tropical fern, Asplenium nidus, having fronds arranged in clumps resembling a bird's nest.
  • bird's-nest soup — a rich spicy Chinese soup made from the outer part of the nests of SE Asian swifts of the genus Collocalia
  • birthday honours — (in Britain) honorary titles conferred on the official birthday of the sovereign
  • birthday present — a gift given to someone on their birthday
  • bismarck herring — marinaded herring, served cold
  • bite one's nails — to chew off the ends of one's fingernails
  • bite your tongue — either of the two fleshy parts or folds forming the margins of the mouth and functioning in speech.
  • bitter principle — any of various bitter-tasting substances, such as aloin, usually extracted from plants
  • bitterroot range — range of the Rocky Mountains, along the Ida.-Mont. border: highest peak, c. 11,000 ft (3,353 m)
  • black nightshade — a poisonous solanaceous plant, Solanum nigrum, a common weed in cultivated land, having small white flowers with backward-curved petals and black berry-like fruits
  • black propaganda — propaganda that does not come from the source it claims to come from
  • black-eyed susan — any of several North American plants of the genus Rudbeckia, esp R. hirta, having flower heads of orange-yellow rays and brown-black centres: family Asteraceae (composites)
  • blasting gelatin — a type of plastic dynamite containing about 7 percent of a cellulose nitrate, used chiefly in underwater work.
  • 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
  • blended learning — the use of both classroom teaching and on-line learning
  • blenheim spaniel — a variety of toy spaniel that is white with reddish-brown spots
  • blind man's buff — a game in which a blindfolded person tries to catch and identify the other players
  • blind man's rule — a carpenter's rule having large numbers to permit its reading in dim light.
  • blind salamander — any of several North American salamanders, especially of the genera Typhlotriton, Typhlomolge, and Haideotriton, that inhabit underground streams or deep wells and have undeveloped eyes and scant pigmentation.
  • 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.
  • block and tackle — a hoisting device in which a rope or chain is passed around a pair of blocks containing one or more pulleys. The upper block is secured overhead and the lower block supports the load, the effort being applied to the free end of the rope or chain
  • blocked currency — a currency that is not freely convertible because of exchange controls imposed on it
  • blonde bombshell — Journalists sometimes use blonde bombshell to refer to a woman with blonde hair who is very attractive.
  • blow one's cover — to be or serve as a covering for; extend over; rest on the surface of: Snow covered the fields.
  • blow one's lines — (of the wind or air) to be in motion.
  • blow one's stack — to lose one's temper; fly into a rage
  • 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.
  • blue in the face — the pure color of a clear sky; the primary color between green and violet in the visible spectrum, an effect of light with a wavelength between 450 and 500 nm.
  • blue mockingbird — any of several gray, black, and white songbirds of the genus Mimus, especially M. polyglottos, of the U.S. and Mexico, noted for their ability to mimic the songs of other birds.
  • blue-green algae — any of a division (Cyanophycota) of photosynthetic monerans, microorganisms that contain a blue pigment which obscures the chlorophyll; cyanobacteria
  • blue-ribbon jury — a jury composed of persons having more than ordinary education and presumably exceptional intelligence and perceptiveness, selected by the court on the motion of plaintiff or defendant to try cases of unusual complexity or importance.
  • blue-winged teal — a small North American duck (Anas discors) found on ponds and rivers
  • bluegrass region — a region in central Kentucky, famous for its horse farms and fields of bluegrass.
  • blunt instrument — something such as a hammer, used as a weapon
  • board and batten — a siding consisting of wide boards or of sheets of plywood set vertically with butt joints covered by battens.
  • board of inquiry — a group set up to inquire into accidents, etc
  • board of pardons — an agency that determines which prisoners are to be released on parole or discretionary mandatory supervision and recommends pardons
  • boarding kennels — a place where dog owners can pay to have their dogs looked after while they are away
  • boarding officer — a coastguard who boards ships suspected of carrying illegal cargoes or posing a security risk
  • boatswain's mate — a job classification in the US navy
  • boatswain's pipe — a whistle used formerly to give orders on board ship
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