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Consult Chambers 21st Century Dictionary, The Chambers Thesaurus (1996) or Chambers Biographical Dictionary (1997 edition with amendments). Enter your search and choose your title from the drop-down menu.
coma1 noun (comas) a prolonged state of deep unconsciousness from which a person cannot be awakened, caused by head injury, brain damage, stroke, etc.
ETYMOLOGY: 17c: from Greek koma deep sleep.
coma2 noun (comae) 1 bot a tuft of hairs attached to the testa of some seeds. 2 bot the arrangement of leaves at the top of a tree. 3 astron the envelope of gas and dust which forms around the nucleus of a comet. 4 optics a defect in an optical system or the manifestation of it in which the image of a point appears as a blurred pear shape.
ETYMOLOGY: 17c: Latin, from Greek kome hair of the head.
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The Chambers Dictionary (13th edition)
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The Chambers Thesaurus
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Chambers Biographical Dictionary
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Consult Chambers 21st Century Dictionary, The Chambers Thesaurus (1996) or Chambers Biographical Dictionary (1997 edition with amendments). Enter your search and choose your title from the drop-down menu.
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