( n. )
One of the microsporic siliceous spicules which occur abundantly in the texture of sponges, and are sometimes found fossil, as in flints.
( n. )
One of the microsporic siliceous spicules which occur abundantly in the texture of sponges, and are sometimes found fossil, as in flints.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012