Where does “malunion” come from?

Malunion comes from Old French mal- (badly) combined with English union, which derives from Old French union, from Latin ūniō (a joining together), formed from the root of Latin ūnus (one) with the suffix -iō.

malunion (English): Bad or incorrect union

Definitions

  1. Bad or incorrect union

Ancestry of “malunion”, step by step

malunion traces back through two separate lines of ancestry.

via English Union

StepLanguageWordMeaning
1EnglishUnionThe 0-10-2 locomotive wheel arrangement
2EnglishonionA monocotyledonous plant (Allium cepa), allied to garlic, used as vegetable and spice
3Middle EnglishonyounThe onion plant
4Old Frenchoignononion
5Latinūniōa unity, union
6Latin-iō
7Proto-West Germanic-jōForms agent nouns from verbs
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via English mal

StepLanguageWordMeaning
1Englishmalillness, affliction; A longboard; Malleolus
2Frenchmaltrouble, difficulty; pain; evil
3Old Frenchmalevilly; badly; poorly; evil
4Latinmalleushammer, mallet; a disease of animals; the...
5Proto-Indo-Europeanmelh₂-no-
6Proto-Indo-Europeanmelh₂-to grind, to crush
7Proto-Indo-Europeanmel-soft; tender; weak; to deceive; to rub
8Proto-Indo-Europeanmey-to strengthen; to bind; to change, exchange
Every word from Chichewa iye