Where does “ortho-” come from?

ortho- (English) comes from Ancient Greek ὀρθός, from Proto-Hellenic ortʰwós, from Proto-Indo-European h₃r̥dʰwós, from Proto-Indo-European h₃erdʰ-, from Proto-Indo-European -wós — Creates adjectives from verb stems.

ortho- (English): straight, right, proper; Having an extra...

Definitions

  1. straight, right, proper; Having an extra...

Ancestry of “ortho-”, step by step

StepLanguageWordMeaning
1Ancient Greekὀρθόςstraight, upright, erect; straight forward, in a...
2Proto-Hellenicortʰwós—
3Proto-Indo-Europeanh₃r̥dʰwós—
4Proto-Indo-Europeanh₃erdʰ-to increase, grow; upright, high
5Proto-Indo-European-wósCreates adjectives from verb stems

Words derived from “ortho-”

Every word from Proto-Indo-European -wós →Every word from Proto-Indo-European h₃erdʰ- →Every word from Proto-Indo-European h₃r̥dʰwós →