We found one dictionary that defines the word hypopycnal:

General (1 matching dictionary)

1. hypopycnal: Wiktionary

Definitions from Wiktionary (hypopycnal) ▸ adjective:  Having a lower density. ▸ Words similar to hypopycnal ▸ Usage examples for hypopycnal ▸ Idioms related to hypopycnal ▸ Wikipedia articles (New!) ▸ Popular nouns described by hypopycnal ▸ Words that often appear near hypopycnal ▸ Rhymes of hypopycnal ▸ Invented words related to hypopycnal