airstone

Not valid in Scrabble

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

Definition of airstone

1 sense · 1 part of speech · etymology included

A piece of aquarium furniture, traditionally limewood or porous stone, whose purpose is to diffuse oxygen gradually into the tank, eliminating the noise and large bubbles of conventional air filtration systems.

Definitions from Wiktionary, CC BY-SA.

From air + stone.

11 plays · some not in Scrabble

200+ playable · top: NOTARIES (8 pts)

See every word you can make from a set of letters that includes airstone, or browse word lists you can mine for high-scoring plays.

Find more plays Browse word lists