We found 2 dictionaries that define the word planorboid:

General (2 matching dictionaries)

1. planorboid: Wordnik
2. planorboid: Wiktionary

Definitions from Wiktionary (planorboid) ▸ adjective:  (malacology) Flat and orb-like. ▸ Words similar to planorboid ▸ Usage examples for planorboid ▸ Idioms related to planorboid ▸ Wikipedia articles (New!) ▸ Popular nouns described by planorboid ▸ Words that often appear near planorboid ▸ Rhymes of planorboid ▸ Invented words related to planorboid