cis-

1.
a prefix occurring in loanwords from Latin meaning “on the near side of” (cisalpine); on this model, used in the formation of compound words (cisatlantic).
2.
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).
Origin
< Latin; akin to here

C.I.S.

1.
Commonwealth of Independent States.

Commonwealth of Independent States

noun
1.
an alliance of former Soviet republics formed in December 1991, including: Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russian Federation, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan.
Abbreviation: C.I.S.
Examples from the web for cis
  • cis isomers and trans isomers often have different physical properties.
  • The cis isomer is called maleic acid and the trans is named fumaric acid.
  • In this case, the cis isomer is more stable than the trans isomer.
British Dictionary definitions for cis

CIS

abbreviation
1.
Commonwealth of Independent States

cis-

prefix
1.
on this or the near side of: cisalpine
2.
(often in italics) indicating that two groups of atoms in an unsaturated compound lie on the same side of a double bond: cis-butadiene Compare trans- (sense 5)
Word Origin
from Latin

Commonwealth of Independent States

noun
1.
a loose organization of former Soviet republics, excluding the Baltic States, formed in 1991 CIS
Word Origin and History for cis

cis-

word-forming element meaning "on the near side of, on this side," from Latin preposition cis "on this side" (in reference to place or time), related to citra (adv.) "on this side," from PIE *ki-s, from root *ko- "this" (cf. Old Church Slavonic si, Lithuanian šis, Hittite ki "this," Old English hider, Gothic hidre "hither;" see he). Opposed to trans- or ultra-. Originally only of place, sometimes 19c. of time; 21c. of life situations (e.g. cis-gender, by 2011).

cis in Medicine

cis (sĭs)
adj.
Having two mutations on two genes on the same chromosome of a homologous pair. Often italic.

cis- pref.
Often cis- 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.

cis in Technology


1. Case Integration Services.
2. Cooperative Information System.
3. Customer Interaction Software, Customer Information Systems.

Related Abbreviations for cis

CIS

  1. Cancer Information System
  2. carcinoma in situ
  3. Commonwealth of Independent States
  4. CompuServe Information Service