ar-
plural of tightwad
The absence of psychosis.
(mathematics, trigonometry) Used to form the names of inverse hyperbolic trigonometric functions, and the symbols for these functions.
(obsolete) union; combination; a coupling; a pair
いくつかの表記では、逆双曲線三角関数を表す接頭辞が、逆双曲線正弦や逆双曲線余弦といった名称を作るために用いられます。
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