Word Explorer

X factor

An unknown or hard-to-define influence; a factor with unknown or unforeseeable consequences.

📖 Definitions of "X factor"

noun

1
An unknown or hard-to-define influence; a factor with unknown or unforeseeable consequences.
2
A special talent, ability or quality or its indefinable cause.
3
Prothrombinase, also called factor X.
4
The proportionality constant which converts CO emission line brightness to molecular hydrogen mass.

Pick a language — the word will be pre-filled in the translator.