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ramentum

[ruh-men-tuh m]
noun, plural ra·men·ta [ruh-men-tuh] /rəˈmɛn tə/.
  1. a scraping, shaving, or particle.
  2. Botany. one of the thin, chafflike scales covering the shoots or leaves of certain ferns.
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Origin of ramentum

1655–65; < Latin rāmentum a shaving, shred < *rādmentum, equivalent to rād(ere) to scrape + -mentum -ment
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ramentum

ramentum

noun plural -ta (-tə)
  1. any of the thin brown scales that cover the stems and leaves of young ferns
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Derived Formsramentaceous (ˌræmɛnˈteɪʃəs), adjective

Word Origin for ramentum

C17: from Latin rādere to scrape
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