Etymograph

English

allantois

Allantois comes from Ancient Greek ἀλλαντοειδής ‘sausage-shaped’.

  1. Ancient Greekc. 800–300 BCEἀλλαντοειδήςallantoeidḗs‘sausage-shaped’
  2. Englishtodayallantois

attested reconstructed ? uncertain or disputed

Lineage

  1. Ancient Greekc. 800–300 BCEἀλλαντοειδήςallantoeidḗs‘sausage-shaped’
  2. Englishtodayallantois

Today it means

noun A sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles.

Language periods are conventional ranges, not dates for this word.

Etymograph / Ancient Greek ἀλλαντοειδής / allantois