Strong's #5540: chresis (pronounced khray'-sis)
from 5530; employment, i.e. (specially), sexual intercourse (as an occupation of the body):--use.
Thayer's Greek Lexicon:
͂
chrēsis
1) use
1a) of the sexual use of a woman
Part of Speech: noun feminine
Relation: from G5530
Usage:
This word is used 2 times:
Romans 1:26: "even their women did change the natural use into"
Romans 1:27: "leaving the natural use of the woman, burned in"