Origin: Latin suffix -al
Definition, synonyms and related words
Of or pertaining to both the yolk sac and the intestine, as (usually, more specifically) relating to the vitelline duct (that is, the vitellointestinal duct or yolk stalk), a passage between the yolk sac and midgut that usually disappears during embryonic development but sometimes persists congenitally as a diverticulum or fistula.