SPICULES
Noun
spicules
plural of spicule
Source: Wiktionary
SPICULE
Spic"ule, n. Etym: [L. spiculum a little point, a dart.]
1. A minute, slender granule, or point.
2. (Bot.)
Definition: Same as Spicula.
3. (Zoöl.)
Definition: Any small calcareous or siliceous body found in the tissues of
various invertebrate animals, especially in sponges and in most
Alcyonaria.
Note: Spicules vary exceedingly in size and shape, and some of those
found in siliceous sponges are very complex in structure and elegant
in form. They are of great use in classification.
Description of the Illustration:
a Acerate; b Tricurvate, or Bowshaped; c d Hamate; e Broomshaped; f
Scepterellate; g Spinispirulate; h Inequi-anchorate; i Sexradiate; j
A Trichite Sheaf; k Six-rayed Capitate; l Rosette of Esperia; m Equi-
anchorate.
Source: Webster’s Unabridged Dictionary 1913 Edition