dia-
Save This Word!
a prefix occurring in loanwords from Greek (diabetes; dialect) and used, in the formation of compound words, to mean “passing through” (diathermy), “thoroughly,” “completely” (diagnosis), “going apart” (dialysis), and “opposed in moment” (diamagnetism).
QUIZZES
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Also especially before a vowel, di-.
Definition for dia- (2 of 2)
dia.
abbreviation
diameter.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for dia-
British Dictionary definitions for dia-
dia-
di-
prefix
through, throughout, or duringdiachronic
acrossdiactinic
apartdiacritic
(in botany) at right anglesdiatropism
in opposite or different directionsdiamagnetism
Word Origin for dia-
from Greek dia through, between, across, by
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
Medical definitions for dia-
dia-
pref.
Through:diapedesis.
Across:diameter.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for dia-
dia-
A prefix meaning through or across, as in diameter, the length of a line going through a circle.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.