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1620s, from Modern Latin tactica (17c.), from Greek taktike techne "art of arrangement," noun use of fem. of taktikos "of or pertaining to arrangement," especially "tactics in war," adjective to taxis "order," verbal noun of tassein "arrange," from PIE root *tag- "to set aright."
1766, from Modern Latin tactica, from Greek taktike (tekhne) "(art of) arrangement," from fem. of taktikos (see tactics). Earlier it meant "a tactician" (1630s), and was in use as an adjective meaning "tactical" (c.1600).