perisome

Not valid in Scrabble

It's a recognised English word, but it isn't in the official NASPA Scrabble word list.

Definition of perisome

1 sense · 1 part of speech

The outer body of an invertebrate; the integument

“In many Echinoïda, as in the Asteroïda, the calcareous plates of the perisome are movably connected together, and so allow of changes in the form of the body.”

Definitions from Wiktionary, CC BY-SA.

4 plays · some not in Scrabble

200+ playable · top: MOPERIES (12 pts)

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