English dictionary, thesaurus, translations & etymology
FreeDict.com
adj

cis

sihs
adj
1
Cisgender; describing someone whose gender identity matches the sex they were assigned at birth.
"The survey asked respondents whether they identified as cis or trans."
2
In chemistry, describing a molecule where two similar groups sit on the same side of a double bond or ring.
"The cis form of the fatty acid behaves differently from its trans counterpart."

How to Use Cis

Learner’s notes

In plain EnglishNot transgender (in social contexts), or describing molecules with matching groups on the same side (in chemistry).

Easily confused with
Study it as flashcards or scroll it in Flow — saved to your collection.
Test yourself on “cis” A quick quiz — meaning, synonyms & usage

Fill the Gap

Can you complete this real example?

The survey asked respondents whether they identified as _____ or trans.

Etymology

From Latin cis, "on this side of" — the opposite of "trans", "across" or "on the other side".

Antonyms

Related Words

Rhymes for cis

See all rhymes for cis →

People Also Searched

Definitions: FreeDict original editorial