1932, "a communication system of teletypewriters," from tel(etype) ex(change).
also Kruger rand, 1967, South African gold coin (issued for investment purposes) bearing a portrait of Transvaal President Stephanus Johannes Paulus Kruger (1825-1904); second element is rand, unit of decimal currency introduced in Republic of South Africa 1961, named for The Rand, gold-mining area in Transvaal, short for Witwatersrand (see rand).
"act or process of reducing to a code or system," 1817 (Bentham), noun of action from codify.
1670s, "pertaining to a system," from French systématique or directly from Late Latin systematicus, from Greek systematikos "combined in a whole," from systema (genitive systematos); see system. From 1789 as "methodical," often in a bad sense, "ruthlessly methodical." Related: Systematical (1660s); systematically.