BioConcepts

fatλίπος (gr.); adeps (lat.); gras (fr.); Fette (ger.)

• Any of a class of organic compounds of which animal fat is the type. (OED 2012)
  category molecular biology

  c. -350 (BC)

  καὶ τὸ ἄναιμον διὰ τὸ αὐτό, ἐὰν μὴ μεγέθει ἀπαμύνηται οὔτε γὰρ λίπος οὔτε γλυκὺ ἔχει. ἐν γὰρ ζῴῳ τὸ λιπαρὸν γλυκύ· διὸ αἱ μέλιτται μακροβιώτεραι ἑτέρων μειζόνων ζῴων. [For the same reason bloodless animals perish readily unless protected by great size, for there is neither fatness nor sweetness about them. In animals fat is sweet, and hence bees are longer-lived than other animals of larger size.]

  Aristoteles (c. 350 BC). De longitudine et brevitate vitae 467a2-5 [transl. by Translated by G.R.T. Ross].