All 6 Uses

factor
in
Glory in Death
(Auto-generated)

Unless his lawyers try to block it, Doctor Mira will test him, determine his emotional and mental state, the probability factor of his aptitude toward violence.†
Chpt 14 *

factor = thing that affects a result or outcome
With known data, the probability factor of guilt is eighty-three point one percent.†
Chpt 14
There's also the attention factor.†
Chpt 8
The envy factor can be leaned toward a female.†
Chpt 8
The Roarke factor adds a gold edge.†
Chpt 11
You didn't factor that in to the mix, did you, Lieutenant?†
Chpt 14

Definitions:

(1) (factor as in: It was the deciding factor.)
something that affects a result or outcome

You also may encounter x-factor or x factor--meaning "the most important thing that influences a result or outcome."
(2) (factor as in: factor it into your thinking)
include consideration of
(3) (meaning too rare to warrant focus)
There are many specialized meanings in fields such as mathematics, business, finance, biology, and grammar.