köken: Sino-Vietnamese word from 導 (“to lead; to guide”) and 函 (“function”). Coined by Hoàng Xuân Hãn in Danh-từ Khoa-học (Vocabulaire Scientifique, 1942) as an abbreviation of 導函數 (đạo hàm số).
köken: Etymology tree Esperanto derivi Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-tós Proto-Indo-European *-eh₂tos Proto-Italic *-ātos Vulgar Latin -ātus Proto-Indo-European *-ikos Proto-Italic *-ikos Vulgar Latin -icus Vulgar Latin -āticus Vulgar Latin -āticumder. Esperanto -aĵo Esperanto derivaĵo From derivi (“to derive”) + -aĵo.