SPICULE

spicule, spiculum

(noun) small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals

Source: WordNet® 3.1


Etymology

Noun

spicule (plural spicules)

A sharp, needle-like piece.

(biology) Any of many needle-like crystalline structures that provide skeletal support in marine invertebrates like sponges.

A needle-like mating structure found only in male nematodes.

(astronomy) A jet of matter ejected from the photosphere of the sun.

A small spike of flowers.

Anagrams

• Pulices, clipeus

Source: Wiktionary


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



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Word of the Day

14 March 2025

PARASITISM

(noun) the relation between two different kinds of organisms in which one receives benefits from the other by causing damage to it (usually not fatal damage)


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