Where does “heartworm” come from?

heartworm (English) comes from English Worm, from Middle English worm, from Old English wyrm, from Old English lēah, from Proto-West Germanic lauh, from Proto-Germanic lauhaz, from Proto-Indo-European lówkos, from Proto-Indo-European lewḱ- — bright; to shine; to see.

heartworm (English): A parasitic organism that afflicts dogs, the...

Definitions

  1. A parasitic organism that afflicts dogs, the...

Ancestry of “heartworm”, step by step

heartworm traces back through two separate lines of ancestry.

via English Worm

StepLanguageWordMeaning
1EnglishWormA generally tubular invertebrate of the annelid phylum; an earthworm
2Middle EnglishwormA worm or similar small wormlike animal that...
3Old Englishwyrmcreeping insect; maggot, grub, worm; snake,...
4Old Englishlēahmeadow; clearing with a pigsty; woodland,...
5Proto-West Germaniclauhclearing; meadow
6Proto-Germaniclauhazclearing; meadow
7Proto-Indo-Europeanlówkosclearing; open space, clearing; field, meadow
8Proto-Indo-Europeanlewḱ-lynx
9Proto-Indo-Europeanlewk-bright; to shine; to see

via English heart

StepLanguageWordMeaning
1EnglishheartA muscular organ that pumps blood through the...
2Middle EnglishherteThe heart; One's inner self; the mind or...
3Old Englishheorteheart
4Proto-West Germanichertāheart
5Proto-Germanichertôheart
6Proto-Indo-Europeanḱḗrheart
Every word from Proto-Indo-European lewk-
heartworm — Etymology, Origin & Word History | Etymology Explorer