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pycno-

  1. a combining form meaning “dense,” “close,” “thick,” used in the formation of compound words: pycnometer.
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Also especially before a vowel, pycn-.

Origin of pycno-

< New Latin, combining form representing Greek pyknós
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pycno-

pycno-

before a vowel pycn-

combining form
  1. indicating thickness or densitypycnometer
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Word Origin

via New Latin from Greek puknos thick
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 pycno-

before vowels pycn-, word-forming element meaning "close, thick, dense," from comb. form of Greek pyknos "thick, dense." Sometimes via German as pykno-.

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Online Etymology Dictionary, © 2010 Douglas Harper