विभिन्न समुद्री और ताजे पानी के इनवर्टेब्रेट्स में एक कंकाल तत्व के रूप में कार्यरत छोटी नुकीली संरचना उदा। स्पंज और कोरल

Noun:

सुई जैसी नुकीली चीज, छोटी पैनीनोकदार वस्तु,

spicules's Usage Examples:

The metameric repetition of the shellplates and of the ctenidia are probably special modifications, but it is difficult to explain the spicules of the dorsal integument except as a condition more primitive than the shell itself.

Green mud differs to a greater extent from the blue mud, and owes its characteristic nature and colour to the presence of glauconite, which is formed inside the cases of foraminifera, the spines of echini and the spicules of sponges in a manner not yet understood.

The Ctenostomata are ill adapted for preservation as fossils, though remains referred to this group have been 1 Calcareous spicules have been described by Lomas in Alcyonidium gelatinosum.

The limestones contain Globigerina and other Foraminifera, the siliceous beds are made of Radiolaria, sponge spicules and diatoms, while the red clay closely resembles the red clay of the deepest parts of the oceans.

The mouth is terminal and anterior and surrounded by a ring of spicules or a half-ring of hooks.

Body elongated; visceral mass marked off from foot posteriorly; dorsal appendages absent, or reduced to a single pair; spicules in the integument.

Genital duct triaulic. Spicules present in the mantle.

It is quite possible that the characters of the nematocysts might afford data as useful to the systematist in this group as do the spicules of sponges, for instance.

Sponges are represented by spicules and anchor ropes.

The cuticle, in some species very thick, contains numerous spicules which are long, hollow and calcified; they are secreted by epithelial papillae.

spicules's Meaning':

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

Synonyms:

outgrowth, appendage, process, spiculum,

Antonyms:

fall, ending, decrease, irreversible process, increase,