We found 2 dictionaries that define the word protosyllabic:

General (2 matching dictionaries)

1. protosyllabic: Merriam-Webster
2. protosyllabic: Wiktionary

Definitions from Wiktionary (protosyllabic) ▸ adjective:  Of or relating to a protosyllable. ▸ Words similar to protosyllabic ▸ Usage examples for protosyllabic ▸ Idioms related to protosyllabic ▸ Wikipedia articles (New!) ▸ Popular nouns described by protosyllabic ▸ Words that often appear near protosyllabic ▸ Rhymes of protosyllabic ▸ Invented words related to protosyllabic