Lexic.us

Definition of Micraster

1. n. A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows.

Definition of Micraster

1. Noun. (paleontology) Any of the extinct genus ''Micraster'' of infaunal echinoids. ¹

¹ Source: wiktionary.com

Medical Definition of Micraster

1. A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; from the starlike disposal of the ambulacral furrows. Origin: NL, fr. Gr. Small + star. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Micraster

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