Dictionary.com

syn-

Save This Word!

a prefix occurring in loanwords from Greek, having the same function as co- (synthesis; synoptic); used, with the meaning “with,” “together,” in the formation of compound words (synsepalous) or “synthetic” in such compounds (syngas).
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help
Also sy-, syl-, sym-, sys-.

Origin of syn-

<Greek, combining form representing sýn with, together with

Other definitions for syn- (2 of 2)

syn.

abbreviation
synonym.
synonymous.
synonymy.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use syn- in a sentence

British Dictionary definitions for syn- (1 of 3)

syn
/ (saɪn, sɪn) /

adverb, preposition, conjunction
a variant of syne 1

British Dictionary definitions for syn- (2 of 3)

syn-

prefix
with or togethersynecology
fusionsyngamy

Word Origin for syn-

from Greek sun together, with

British Dictionary definitions for syn- (3 of 3)

syn.

abbreviation for
synonym(ous)
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 syn-

syn-

pref.
Together; with:synclonus.
United:syncephaly.
Same; similar:synteny.
At the same time:synesthesia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK