op·er·on 
(ŏpə-rŏn′)
(ŏpə-rŏn′)n.
A unit of genetic material that functions in a coordinated manner by means of an operator, a promoter, and one or more structural genes that are transcribed together.
[OPER(ATOR) + -ON1.]
- exhaustedly
- exhauster
- exhaustibility
- exhaustible
- exhaustingly
- exhaustion
- exhaustive
- exhaustively
- exhaustiveness
- exhaustivity
- exhaustless
- exhaustlessly
- exhaustlessness
- exhaust pipe
- exhibit
- exhibiter
- exhibition
- exhibitionism
- exhibitionist
- exhibitionistic
- exhibitive
- exhibitively
- exhibitor
- exhibitory
- exhilarant