What is a spicule?

What is a spicule? Here are some definitions.

Noun 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 structures found only in male nematodes. (astronomy) A jet of matter ejected from the photosphere of the sun. A small spike of flowers. Find more words! 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Identification relies on spicule form and arrangement as well as body colour and form. Silicon is used as a structural material in the diatom shell, the radiolarian and heliozoan spicule, and the chrysophyte exoskeleton. The fully formed spicule is composed of a single crystal with an unusual morphology. The spicule thus resembles a little trumpet resting on its mouth. Few long marginalia projecting from the oscular margin may belong to an oscular spicule rim. See Also What is another word for spicule? What is the opposite of spicule? Sentences with the word spicule Words that rhyme with spicule What is the plural of spicule? What is the adjective for spicule? What is the noun for spicule? Nearby Definitions spiculating spiculates spiculated spiculate spiculas spicular spicules spiculiform spiculigenous spiculite spiculites spiculum 7-letter Words Starting With s sp spi spic spicu spicul