variable

¹vari·able

adj \ˈver-ē-ə-bəl, ˈvar-\

Definition of VARIABLE

1

: able or apt to vary : subject to variation or changes <allergy is perhaps the most variable of all diseases—H. G. Rapaport & Shirley Linde>

2

: characterized by variations

3

: not true to type : aberrant—used of a biological group or character

—vari·abil·i·ty \ˌver-ē-ə-ˈbil-ət-ē, ˌvar-\ noun, plural vari·abil·i·ties