iff

[计] 如果仅仅, 当且仅当, "等价"

发音

UK /ɪf ən(d)ˈəʊn.li ɪf/
US /ɪf ən(d)ˈoʊn.li ɪf/

释义与例句

conj.
  1. 1.

    Abbreviation of if and only if.

    数学 哲学

    A rectangle is a square iff all four of its sides have the same length.

  2. 1.

    Obsolete spelling of if.

    废旧

    For iff the patient be aſhamed to diſcloſe hiſ wounde to the phyſician which knoweth it not , phyſicke can not helpe him.