Where does “rationel” come from?

rationel (Old French) comes from French rationnel, from Latin rationalis, from Latin ratiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis- — small stone, pebble; gravel, rubble.

Ancestry of “rationel”, step by step

Step	Language	Word	Meaning
1	French	rationnel	rational
2	Latin	rationalis	accounts; rational, reasonable, of or possessing...
3	Latin	ratiō	—
4	Latin	-tiō	—
5	Latin	dissertātiō	—
6	Latin	dissertus	arranged, disposed; explained
7	Latin	disserere	second-person singular future passive indicative...
8	Latin	dis-	asunder, apart, in two; reversal, removal;...
9	Latin	calceus	shoe
10	Latin	calx	limestone; chalk; the finish line
11	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Words derived from “rationel”

Every word from Ancient Greek χάλιξ →