There are 3 definitions of cis in English:

cis1

Syllabification: cis

adjective

Chemistry
Denoting or relating to a molecular structure in which two particular atoms or groups lie on the same side of a given plane in the molecule, in particular denoting an isomer in which substituents at opposite ends of a carbon-carbon double bond are on the same side of the bond: the cis isomer of stilbene Compare with trans1.
More example sentences
  • But ultraviolet light converts the molecule to the cis isomer, in which both propellers are on the same side.
  • Examples of stereoisomers include the cis and trans isomers of the alkenes.
  • For example, the cis double bond at the centre of the fatty chain in erucamide and oleamide appears vital for slip performance.

Origin

independent usage of cis-.

Definition of cis in:

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Word of the day anastrophe
Pronunciation: əˈnastrəfi
noun
the inversion of the usual order of words...

There are 3 definitions of cis in English:

cis2

Syllabification: cis

adjective

Short for cisgender. we do not make arbitrary distinctions between trans and cis women
More example sentences
  • Trans people tend to be more aware of transphobia than most cis people are.
  • I wasn't trying to set up a competition or hierarchy between trans and cis people.
  • It's been really amazing to see the response from our cis allies against transphobia from parts of the radical feminist community.

Definition of cis in: