Meaning

noun an oily organic compound insoluble in water but soluble in organic solvents; essential structural component of living cells (along with proteins and carbohydrates)

originEtymology tree Proto-Indo-European *leyp- Proto-Hellenic *lípos Ancient Greek λῐ́πος (lĭ́pos) Proto-Indo-European *dʰeh₁-der. Proto-Italic *-iðos Latin -idusbor. French -ide French lipidebor. English lipid Borrowed from French lipide, coined in 1923 by Gabriel Bertrand from Ancient Greek λῐ́πος (lĭ́pos, “animal fat”) + French -ide.

Etymology from Wiktionary, CC BY-SA 3.0