rudiment

[roo-duh-muh nt]
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noun
  1. Usually rudiments.
    1. the elements or first principles of a subject: the rudiments of grammar.
    2. a mere beginning, first slight appearance, or undeveloped or imperfect form of something: the rudiments of a plan.
  2. Biology. an organ or part incompletely developed in size or structure, as one in an embryonic stage, one arrested in growth, or one with no functional activity, as a vestige.

Origin of rudiment

1540–50; < Latin rudīmentum early training, first experience, initial stage, equivalent to rudi(s) unformed, rough (see rude) + -mentum -ment (-ī- for -i- after verbal derivatives)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for rudiment

rudiment

noun
  1. (often plural) the first principles or elementary stages of a subject
  2. (often plural) a partially developed version of something
  3. biology an organ or part in its earliest recognizable form, esp one in an embryonic or vestigial state

Word Origin for rudiment

C16: from Latin rudīmentum a beginning, from rudis unformed; see rude
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

Word Origin and History for rudiment
n.

1540s, from Middle French rudiment (16c.) or directly from Latin rudimentum "early training, first experience, beginning, first principle," from rudis "unlearned, untrained" (see rude). Related: Rudiments.

Online Etymology Dictionary, © 2010 Douglas Harper

rudiment in Medicine

rudiment

[rōōdə-mənt]
n.
  1. An imperfectly or incompletely developed organ or part.
  2. Something in an incipient or undeveloped form. Often used in the plural.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.