Where does “callosum” come from?
Callosum comes from Latin callosus, derived from Latin callum, which traces to Proto-Indo-European kal, attested through Proto-Italic -owonssos and Latin -o-wont-to-s.
callosum (English): corpus callosum
Ancestry of “callosum”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Latin | callōsus | — |
| 2 | Latin | callum | A hard or thick substance; The hardened, thick... |
| 3 | Proto-Indo-European | kal | hard |