cis

[ sis ]
/ sɪs /

adjective

cisgender or cissexual: He may not be macho, but he's definitely a cis male.

noun

a person who is cisgender or cissexual.

QUIZZES

CAN YOU ACE THIS QUIZ ABOUT “COMPLIMENT” VS. “COMPLEMENT”?

Take this quiz to see if you really know the difference between “compliment” and “complement"!
Question 1 of 11
“Compliment” and “complement” had a shared meaning a long time ago, but today they are no longer interchangeable.

Origin of cis

by shortening

usage note for cis

Definition for cis (2 of 3)

cis-

a prefix occurring in loanwords from Latin meaning “on the near side of; on this side of” (cisalpine); on this model, used in the formation of compound words (cisatlantic).
Chemistry. a specialization of this denoting a geometric isomer having a pair of identical atoms or groups attached on the same side of two atoms linked by a double bond.Compare trans-(def 2).
a prefix meaning “on the same side of,” referring to the alignment of one’s gender identity with one’s biological sex assigned at birth (cisgender; cissexual).

Origin of cis-

< Latin; akin to here

Definition for cis (3 of 3)

C.I.S.

Commonwealth of Independent States.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for cis

British Dictionary definitions for cis (1 of 2)

CIS

abbreviation for

Commonwealth of Independent States

British Dictionary definitions for cis (2 of 2)

cis-

prefix

on this or the near side ofcisalpine
(often in italics) indicating that two groups of atoms in an unsaturated compound lie on the same side of a double bondcis- butadiene Compare trans- (def. 5)

Word Origin for cis-

from Latin
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 cis (1 of 2)

cis
[ sĭs ]

adj.

Having two mutations on two genes on the same chromosome of a homologous pair.

Medical definitions for cis (2 of 2)

cis-

pref.

Having a pair of identical atoms or groups on the same side of a plane that passes through two carbon atoms linked by a double bond:cis-butene.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.