parenchymellan.
/pəˌrɛŋkᵻˈmɛlə/, U.S. /pəˌrɛŋkəˈmɛlə/ Zoology.
A sponge larva having no internal cavity.
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the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > at specific stage
germ1646
neurula1878
parenchymula1884
parenchymella1887
typembryo1887
prototypembryo1890
1887 H. V. Wilson tr. E. Metschnikoff in Amer. Naturalist 21 419 There finally arose a two-layered parenchymella, which, by abbreviation of the embryonic process..became changed into a gastrula.
1895 Amer. Naturalist 29 65 Both sponges and coelenterates probably had a common solid ancestor, the Parenchymella.
1957 Systematic Zool. 6 178/1 All the other known larvae of the Demospongiae are solid parenchymellas.
1993 Jrnl. Morphol. 218 301 Larvae are parenchymellae without provision for feeding on particulate matter and without identifiable sensory and neuronal elements.
This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).
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