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tomentum

[tuh-men-tuh m]
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noun, plural to·men·ta [tuh-men-tuh] /təˈmɛn tə/. Botany, Entomology.
  1. pubescence consisting of longish, soft, entangled hairs pressed close to the surface.
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Origin of tomentum

1690–1700; < New Latin tōmentum, Latin: stuffing (of wool, hair, etc.) for cushions
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for tomentum

tomentum

noun plural -ta (-tə)
  1. a feltlike covering of downy hairs on leaves and other plant parts
  2. a network of minute blood vessels occurring in the human brain between the pia mater and cerebral cortex
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Derived Formstomentose (təˈmɛntəʊs), adjective

Word Origin

C17: New Latin, from Latin: stuffing for cushions; related to Latin tumēre to swell
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

tomentum in Medicine

tomentum

(tō-mĕntəm)
n. pl. to•men•ta (-tə)
  1. A network of extremely small blood vessels passing between the pia mater and the cerebral cortex.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.