dihydroceramideWiktionary 原文构词拆分di-前缀Two. · Double, twice the quantity.+hydro-前缀water · liquid+ceramide词根/词干词源说明From di- + hydro- + ceramide.释义（英文）名词 Noun(biochemistry) The biochemical precursor of ceramide, into which it is converted by the enzyme dihydroceramide desaturase