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spicule |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.07 sec. |
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spicule: see chromosphere chromosphere (krō`məsfēr') [Gr. ..... Click the link for more information. . spicule [′spik·yül] (astronomy) One of an irregular distribution of jets shooting up from the sun's chromosphere. Also known as solar spicule. (botany) An empty diatom shell. (invertebrate zoology) A calcareous or siliceous, usually spikelike supporting structure in many invertebrates, particularly in sponges and alcyonarians. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Psammomatoid ossifying fibromas are notable for the presence of bony spicules and mineralized/calcified psammomatoid material. Spicule measurements (1,140-1,180 [micro]m) of nematodes from the gibbon (Figure 2) correlated well with measurements reported for P. 2] and techniques of study, and proceeds to a discussion of sponge spicules and diatoms and the specific proteins thought responsible for silica nucleation. |
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