Spiculum

Spiculum ( Latin spiculum "small tip"), plural spicula , is an expression for:

• the skeletal elements of flower animals and sponges , the outer skeletal elements of worm mollusks (Aplacophora) and the inner skeletal elements of some groups of snails , see sclerite
• a hard structure in the sewer as Begattungshilfsorgan in roundworms , see reproductive tract of nematodes
• Fine, regular, radial bone spikes as a specific form of hyperostosis on the skull
• a type of spear in the Roman legion, see Spiculum (weapon)
• on the solar chromosphere hot gas splashes from shock waves, see Spikulen

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Wiktionary: Spiculum  - explanations of meanings, word origins, synonyms, translations

This is a disambiguation page for differentiating between several terms identified with the same word.