The story
- Latin · derived fromprōportiō“comparative relation, proportion, symmetry, analogy”
- Old French · derived fromproportion
- Middle English · inherited fromproporcion
- English todayproportion
From Middle English proporcion, from Old French proportion, from Latin prōportiō (“comparative relation, proportion, symmetry, analogy”), from pro (“for, before”) + portio (“share, part”); see portion. By surface analysis, pro- + portion.
Etymology from Wiktionary, CC BY-SA 4.0.