| braille |
French educator who lost his sight at the age of three and who invented a system of writing and printing for sightless people (1809-1852) a point system of writing in which patterns of raised dots represent letters and numerals transcribe in Braille
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| bract |
a modified leaf or leaflike part just below and protecting an inflorescence
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| brain |
that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord mental ability; "he's got plenty of brains but no common sense" mind: that which is responsible for one's thoughts and feelings; the seat of the faculty of reason; "his mind wandered"; "I couldn't get his words out of my head" hit on the head genius: someone who has exceptional intellectual ability and originality; "Mozart was a child genius"; "he's smart but he's no Einstein" the brain of certain animals used as meat kill by smashing someone's skull
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| branched chain |
an open chain of atoms with one or more side chains attached to it
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| brain death |
death when respiration and other reflexes are absent; consciousness is gone; organs can be removed for transplantation before the heartbeat stops
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