cis

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌsiːaɪˈɛs/


WordReference Random House Unabridged Dictionary of American English © 2026
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. Chemistrya 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. Cf. trans- (def. 2).
    • Latin; akin to here

C.I.S., 
  1. Place NamesCommonwealth of Independent States.

Collins Concise English Dictionary © HarperCollins Publishers::
CIS abbreviation for
  1. Commonwealth of Independent States
Collins Concise English Dictionary © HarperCollins Publishers::
cis- prefix
  1. on this or the near side of
  2. of or relating to people whose gender identity corresponds to the assumed gender assigned to them at birth
    Compare trans-
  3. (often in italics) indicating that two groups of atoms in an unsaturated compound lie on the same side of a double bond
    Compare trans-
Etymology: from Latin
'cis' also found in these entries (note: many are not synonyms or translations):

🗣️Forum discussions with the word(s) "cis" in the title:


Look up "cis" at Merriam-Webster
Look up "cis" at dictionary.com
  • Go to Preferences page and choose from different actions for taps or mouse clicks.

In other languages: Spanish | French | Italian | Portuguese | Romanian | German | Dutch | Swedish | Russian | Polish | Czech | Greek | Turkish | Chinese | Japanese | Korean | Arabic

Advertisements
Advertisements
Report an inappropriate ad.
WordReference.com
WORD OF THE DAY
GET THE DAILY EMAIL!