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sand dollar

sand dollar

1 5.6
A flat round sea animal with a hard shell that lives on sandy sea floors
  • noun
  • /sænd ˈdɑːlər/
translation icon : dólar de arena
  • It allowed the sand dollars to feed in the nutrient-rich layer at the sediment-water interface while remaining buried.
  • found many sand dollars

In fact, what I most enjoyed about her accumulation of bird figurines and ceramics and sand dollars from Texas beaches was her enjoyment of these things.

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Examples

  • He said. Well, Grandma said turn. These sand dollars are living organisms. If I don't throw them out to sea, they will die in the hot sun,

  • While strolling along the beach, I stumbled upon several beautiful sand dollars buried in the wet sand.

  • And how do we account for the peculiar shape of the sand dollars?

    Academic text (1992)
  • The last major group of urchins to evolve, the highly successful sand dollars, appeared little more than 50 million years ago.

    Academic text (1992)
  • All sand dollars probably evolved from the tiny fibulariids, whose flat shape has proved successful for a number of reasons.

    Academic text (1992)
  • A sand dollar, far right, uses hundreds of tiny spines to cover itself with sand and slip below the surface.

    Academic text (1992)
  • The earliest sand dollars were tiny animals known as fibulariids, which can be found today lurking between sand grains.

    Academic text (1992)
  • In fact, what I most enjoyed about her accumulation of bird figurines and ceramics and sand dollars from Texas beaches was her enjoyment of these things.

  • The children were excitedly collecting sand dollars as they played near the shoreline.

  • After a day of searching, we found a rare, intact sand dollar that had been washed up on the beach.

Synonyms

urchin
vssand dollar
14 4.9

A small sea animal with a round spiny shell on the ocean floor

is flat rather than having a round spiny shell
sea urchin
vssand dollar
8 4.2

A small round sea animal with sharp spines that lives on rocks

is flat rather than having the typical rounded body of others

Surface Forms

sand dollar singular
sand dollars plural

Morphology

sand + dollar

The element 'dollar' clearly signals a monetary unit, so learners who know the constituents will likely infer that this is some kind of currency. However, the modifier 'sand' does not convey that this is a central-bank digital currency or legal-tender status (and the term functions as a proper name), so the specific CBDC meaning cannot be fully derived from the parts.

Etymology

Sand dollar gets its name from its flat, round shell that looks like a coin on the sand. People imagined a little silver dollar, so the name came to mean this round sea urchin shell.