SPHAERIDIUM

Etymology

Noun

sphaeridium (plural sphaeridia)

(zoology) A sense organ found on the exterior of most sea urchins, consisting of an oval or spherical head surmounting a short pedicel. It is generally supposed to be an olfactory organ.

Source: Wiktionary

Sphæ*rid"i*um, n.; pl. Sphæridia. Etym: [NL., fr. Gr. (Zoöl.)

Definition: A peculiar sense organ found upon the exterior of most kinds of sea urchins, and consisting of an oval or sherical head surmounting a short pedicel. It is generally supposed to be an olfactory organ.

Source: Webster’s Unabridged Dictionary 1913 Edition

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