Definition from Wiktionary, the free dictionary
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Character
Unicode name LEFT RIGHT DOUBLE ARROW
Code point U+21D4
Entity number ⇔
Unicode block Arrows
[U+21D3] [U+21D5]

Translingual[edit]

Symbol[edit]

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Wikipedia

  1. (logic) if and only if

Synonyms[edit]

  • (if and only if):

Related terms[edit]