ECHINOIDEA

Echinoidea, class Echinoidea

(noun) sea urchins and sand dollars

Source: WordNet® 3.1


Ech`i*noi"de*a, n. pl. Etym: [NL. See Echinus, and -oid.] (Zoöl.)

Definition: The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid. [Written also Echinidea, and Echinoida.]

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

30 November 2024

HYPOTHETICAL

(noun) a hypothetical possibility, circumstance, statement, proposal, situation, etc.; “consider the following, just as a hypothetical”


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Coffee Trivia

In 1511, leaders in Mecca believed coffee stimulated radical thinking and outlawed the drink. In 1524, the leaders overturned that order, and people could drink coffee again.

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