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definitions

holo-

  1. a combining form meaning “whole,” “entire,” used in the formation of compound words: holomorphic.

Origin of holo-

< Greek, combining form of hólos
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for holo-

holo-

before a vowel hol-

combining form
  1. whole or whollyholograph; holotype; Holarctic

Word Origin for holo-

from Greek holos
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 holo-

before vowels, hol-, word-forming element meaning "whole, entire, complete," from Greek holo-, comb. form of holos "whole, entire, complete," also "safe and sound," from PIE *sol-wo-, from root *sol- (see safe (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper
holo- in Medicine

holo-

pref.
  1. Whole; entirely:holoblastic.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.