Xor
/ˌɛks oʊ ˈɑːr/noun
A logical operation that is true when exactly one of two inputs is true.
Did you know?XOR is fundamental to modern cryptography because combining data with a secret key can be reversed by applying XOR with the same key again.
Etymological Timeline
Proto-Indo-European
PIE
*kel-
“To cover, conceal, or protect; the ancestral root connected with enclosure and concealment.”
Classical Latin
Latin
claudere
“To shut, close, or enclose.”
Late Latin
Latin
excludere
“To shut out or keep outside; the source of English “exclude” and “exclusive.””
14th Century
English
exclusive
“Excluding or restricting to one person or group.”
1950s
English
exclusive OR
“A logical OR in which the result is true only when one input, but not both, is true.”
20th Century–Modern English
Computing
XOR
“The standard abbreviation and operator for exclusive OR in mathematics, electronics, and programming.”