English Dictionary

iff

conj

(mathematics, logic) If and only if; used to show that the truth values of two statements are the same. / biconditionally / just in case or just in the case that / equal / that is to say / XNOR

I will pass the exam if and only if I study hard.

意味（1）

(mathematics, logic) If and only if; used to show that the truth values of two statements are the same.

意味（2）

biconditionally

意味（3）

just in case or just in the case that

意味（4）

equal

意味（5）

that is to say

意味（6）

XNOR

意味（7）

Obsolete spelling of if.