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13-letter words containing t, r

  • beta particle — a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission
  • beta receptor — a receptor, found on the surface of some cells of the sympathetic nervous system, that is stimulated by certain adrenergic substances: such stimulation results in certain physiological responses, such as acceleration of the action of the heart and dilatation of the arteries supplying heart and skeletal muscles
  • beta-carotene — the most abundant of various isomers of carotene, C 40 H 56 , that can be converted by the body to vitamin A.
  • beta-receptor — a site on a cell, as of the heart, that, upon interaction with epinephrine or norepinephrine, controls heartbeat and heart contractability, vasodilation, smooth muscle inhibition, and other physiological processes.
  • bethnal green — a former borough of London, England, N of the Thames.
  • bharat natyam — a form of Indian classical ballet
  • bharata natya — a traditional south Indian dance style, formerly performed only by devadasis.
  • bias-ply tire — a vehicle tire in which the main plies or cords run across the bead.
  • bible-thumper — an enthusiastic or aggressive exponent of the Bible
  • bibliolatrous — characterized by bibliolatry
  • bibliothecary — a librarian
  • bibliotherapy — the use of reading as therapy
  • biculturalism — the characteristics, or policy, of a two-cultured society
  • bidirectional — (of a printhead) capable of printing from left to right and from right to left
  • big brown bat — any of several small to medium-sized common bats of the genera Myotis and Eptesicus, found worldwide in caves, trees, and buildings, including M. lucifugus (little brown bat) and E. fuscus (big brown bat) a widespread North American species.
  • big-heartedly — in a big-hearted manner
  • bill of entry — a list of goods received at a customs house for export or import
  • binary system — a system involving only two elements, as 0 and 1 or yes and no.
  • bio-autograph — an analytical technique in which organic compounds are separated by chromatography and identified by studying their effects on microorganisms.
  • bio-terrorism — the use of living organisms and their toxic products to kill or incapacitate, esp as a political weapon
  • bioautography — an analytical technique in which organic compounds are separated by chromatography and identified by studying their effects on microorganisms.
  • bioelectrical — relating to electrical current generated by biological activity
  • bioenergetics — the study of energy transformations in living organisms and systems
  • biotic factor — a living thing, as an animal or plant, that influences or affects an ecosystem: How do humans affect other biotic factors? Weather is not a biotic factor because it is not alive.
  • bipartisanism — the quality of being bipartisan
  • bird dismount — Hecht1 (def 1).
  • bird-watching — Bird-watching is the activity of watching and studying wild birds in their natural surroundings.
  • birectangular — having two right angles.
  • birth control — Birth control means planning whether to have children, and using contraception to prevent having them when they are not wanted.
  • birth parents — a child's biological parents, regardless of whether they subsequently bring up the child
  • birthday bash — a birthday party
  • birthday cake — a special cake eaten at a birthday party
  • birthday card — a greeting card sent on someone's birthday
  • birthday girl — the girl or woman whose birthday is being celebrated
  • birthday suit — If you are in your birthday suit, you are not wearing any clothes.
  • birthing ball — a large soft rubber ball used by women during childbirth to give support and to aid pain relief
  • birthing pool — a large bath in which a woman can give birth
  • birthing room — a section of a hospital or an outpatient facility set aside and equipped for childbirth and usually simulating a home environment in which family members or friends may be present during the delivery.
  • biscuit bread — biscuits or a biscuit: I like biscuit bread more than corn bread for supper.
  • biscuit-fired — (of a ceramic object) fired to harden the body.
  • bite your lip — If you bite your lip, you try very hard not to show the anger or distress that you are feeling.
  • bits per inch — (unit)   (BPI) A measure of the recording density of a magnetic tape or disk.
  • bitter almond — a variety of almond whose bitter seeds yield hydrocyanic acid upon hydrolysis
  • bitter orange — a globose, reddish-yellow, bitter or sweet, edible citrus fruit.
  • bittersweetly — in a bittersweet manner
  • black country — a district in the English Midlands, around Birmingham: so called from the soot and grime produced by the many local industries.
  • black currant — the small, round, blackish, edible fruit of a widely cultivated shrub, Ribes nigrum, of the saxifrage family.
  • black margate — a grayish grunt, Anisotremus surinamensis, of the Atlantic Ocean from Florida to Brazil.
  • black mustard — a Eurasian plant, Brassica (or Sinapsis) nigra, with clusters of yellow flowers and pungent seeds from which the condiment mustard is made: family Brassicaceae (crucifers)
  • black panther — (in the US) a member of a militant Black political party (1965–82) founded to end the political dominance of White people
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