What is one of the special defensive zooids of certain hydroids. They have the form of long, slender tentacles, and bear lasso cells called?
spiralozooid — One of the special defensive zooids of certain hydroids. They have the form of long, slender tentacles, and bear lasso cells. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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