Sand Dollar Definition

noun
Any of various thin circular echinoderms of the order Clypeasteroida, especially Echinarachnius parma, of coastal northern Atlantic and Pacific waters, having a covering of short movable spines.
American Heritage
Any of an order (Clypeasteroida) of flat, round, disk-shaped echinoid echinoderms that live on sandy ocean beds.
Webster's New World
The disklike internal skeleton of a sand dollar, having five radially symmetric oblong markings and often a pattern of long narrow holes.
American Heritage

Other Word Forms of Sand Dollar

Noun

Singular:
sand dollar
Plural:
sand-dollars

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