Ambulacrum Definition

ămbyə-lăkrəm, -lākrəm

ambulacra

noun

In echinoderms, that surface area containing a radiating series of perforated plates through which the tube feet extend.

Webster's New World

One of the five radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn.

American Heritage Medicine

(of an echinoderm) A row of pores for the protrusion of appendages such as tube feet.

Wiktionary

Other Word Forms of Ambulacrum

Singular:

ambulacrum

Plural:

ambulacra, ambulacrums

Latin ambulācrum walk planted with trees from ambulāre to walk ambhi in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition
From Latin ambulacrum, from ambulō (“walk; travel”).

From Wiktionary

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