petaloid ambulacrum

noun

: am ambulacrum in which the apical portion is expanded to form an area petaloid in outline on the aboral surface of the test (as in most irregular sea urchins)

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Dictionary Entries Near petaloid ambulacrum

Cite this Entry

“Petaloid ambulacrum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/petaloid%20ambulacrum. Accessed 15 Jul. 2024.

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