deduct 的詞源

15世紀早期，「在估算或計數中減去、分開或移除」，來自拉丁語 deductus，是 deducere 的過去分詞，意為「引導下來，帶走」；參見 deduce，它們曾經是可以互換的。Deduct 指的是減去部分或數量；subtract 指的是減去數字。相關詞：Deducted；deducting。

Deduct is to lead away, set aside, in a general or distributive sense; subtract, to draw off, remove, in a literal or collective sense. In settling a mercantile account, certain items, as charges, losses, etc. are deducted by being added together and their total subtracted from the grand total of the transaction. [Century Dictionary]

Deduct 是在一般或分配意義上引導離開、撇開；subtract 是在字面或集合意義上抽離、移除。在結算商業賬戶時，某些項目，如費用、損失等，通過加總後從交易的總額中減去。 [世紀詞典]