penta-

penta-

a combining form occurring in loanwords from Greek, meaning “five” (Pentateuch ); on this model, used in the formation of compound words (pentavalent ).
Also, especially before a vowel, pent-.


Origin:
< Greek pent-, penta-, comb. forms representing pénte five

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Collins
World English Dictionary
penta-
 
combining form
five: pentagon; pentameter; pentaprism
 
[from Greek pente five]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

penta-
comb. form meaning "five," from Gk. penta- (before a vowel, pent-), from pente "five," related to Aeolian pempte (see five).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

penta- or pent-
pref.

  1. Five: pentameter.

  2. Containing five atoms, molecules, or groups: pentose.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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