Where does “sinistrorotatory” come from?

sinistrorotatory (English) comes from English sinistro-, from Latin sinister, from Proto-Italic senisteros.

sinistrorotatory (English): Synonym of levorotatory

Definitions

  1. Synonym of levorotatory

Ancestry of “sinistrorotatory”, step by step

StepLanguageWordMeaning
1Englishsinistro-Left; on the left; toward the left
2Latinsinisterleft; perverse, bad; or adverse, hostile;...
3Proto-Italicsenisteros
Every word from Proto-Italic senisterosEvery word from Latin sinisterEvery word from English sinistro-