Where does “micrograin” come from?

micrograin (English) comes from English grain, from Middle English grayn, from Old Norse grein, from Proto-Germanic grainō.

micrograin (English): A microscopic grain

Definitions

  1. A microscopic grain

Ancestry of “micrograin”, step by step

micrograin traces back through two separate lines of ancestry.

via English grain

StepLanguageWordMeaning
1EnglishgrainThe harvested seeds of various grass food crops...
2Middle EnglishgraynA forking channel or pass; a fjord or estuary;...
3Old Norsegreinbranch; point, head, part; cause, reason
4Proto-Germanicgrainō

via English micro

StepLanguageWordMeaning
1EnglishmicroSmall, relatively small; short form of...
2Ancient Greekμικρόςlittle, small
3Proto-Indo-Europeanmēy-soft, tender, dear
Every word from Proto-Germanic grainō