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acron |
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acron [′ak‚rän]
(evolution) Unsegmented head of the ancestral arthropod. (invertebrate zoology) The preoral, nonsegmented portion of an arthropod embryo. The prostomial region of the trochophore larva of some mollusks. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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