ramentum

[ ruh-men-tuh m ]
/ rəˈmɛn təm /

noun, plural ra·men·ta [ruh-men-tuh] /rəˈmɛn tə/.

a scraping, shaving, or particle.
Botany. one of the thin, chafflike scales covering the shoots or leaves of certain ferns.

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. 2019

British Dictionary definitions for ramentum

ramentum

/ (rəˈmɛntəm) /

noun plural -ta (-tə)

any of the thin brown scales that cover the stems and leaves of young ferns
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