## iff

(mathematics, logic) if and only if, i.e. necessary and sufficient. For example, two figures are congruent iff one can be placed over the other so that they coincide.

Last updated: 2002-12-28

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(mathematics, logic) if and only if, i.e. necessary and sufficient. For example, two figures are congruent iff one can be placed over the other so that they coincide.

Last updated: 2002-12-28

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Updated: Wed Oct 26 16:27:59 2016

14873 terms

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