portio

Etymology
Traditionally related to the same root as, , and. These terms stem from the root, which also gave the Ancient Greek , and.

De Vaan offers an alternative etymology where portiō would instead be a dissimilated and syncopated compound of : prō ratiōne > prōrtiōne > portiōne, an adverbial phrase from which the noun portiō would be back-formed. If this etymology is correct, portiō would be unrelated to.

Noun

 * 1) share, part, portion
 * 2) relation, proportion
 * 1) relation, proportion