sand dollar

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sand dollar

n.
1. 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.
2. The disklike internal skeleton of a sand dollar, having five radially symmetric oblong markings and often a pattern of long narrow holes.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sand dollar

n
(Animals) any of various flattened disclike echinoderms of the order Clypeasteroida, of shallow North American coastal waters: class Echinoidea (sea urchins)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

sand′ dol`lar


n.
any flat, disklike echinoderm of the order Clypeasteroidea, of the same class as sea urchins, living on sandy bottoms.
[1880–85, Amer.]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sand dollar - flattened disklike sea urchins that live on sandy bottomssand dollar - flattened disklike sea urchins that live on sandy bottoms
sea urchin - shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
Exocycloida, order Exocycloida - flat sea urchins
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
We row over to Muerba and spot hermit crabs leaving cog-like trails, as we search for sand dollars (small, flat stones, naturally imprinted with flowers) on the shore, like twinkling treasures waiting to be discovered.
We row over to Muerba and spot hermit crabs leaving cog-like trails, as we search for sand dollars on the shore, like twinkling treasures waiting to be discovered.
Eliana stopped every few steps to throw back a sea animal such as sand dollars, crabs, and other shell creatures that were going to die as they were left behind by the ebbing tide.
Collecting sand dollars or litter at the beach doesn't work--the guy will feed Alka-Seltzer to the seagulls and scare little kids.
Everywhere except Seattle, we kept adult sand dollars partially buried within fine sediments (collected from the adult beds) in flowing seawater aquaria until spawning; in Seattle, we fertilized the sand dollars on the day of collection and returned the adults to their sand dollar bed the following day.
Despite the minor discomforts, beach camping comes with its own payoffs: beautiful sunrises and sunsets, for one, sand dollars to collect and birds to watch.
Whether it's a perfect sunset, a newly built sand castle or a bucket full of sand dollars, there are hundreds of little details that await, so be ready.
By: Nancy Ragab CAIRO -- 16 June 2017: It is widely believed that sand dollars are a sign of good fortune with their beautiful appearance and the star-like shape naturally drawn on its center.
Roadside sidewalks are rarer than sand dollars. And at night, even folks who frequent the area can have trouble seeing where the C&K Market entrances begin and end.
In the ocean, the closed seaway divided populations of marine organisms such as sand dollars. Over time, these populations' genetic makeups diverged.
H J Ralles' The Ghosts of Malhado begins as Alex scours the sands for a sand dollars to add to his collection.
fish, sand dollars) in the Pacific and Atlantic oceans.