keratoseadj.n.
/ˈkɛrətəʊs/, /ˈkɛrətəʊz/, U.S. /ˈkɛrəˌtoʊs/, /ˈkɛrəˌtoʊz/ A. adj.
Of a horny substance; applied to the texture of certain sponges.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > class Demospongiae > [adjective] > of horny substance
keratose1849
keratode1872
1849 R. Owen in J. F. W. Herschel Man. Sci. Enq. (Lords Commissioners Admiralty) 344 They are divided..into horny, or ‘keratose’, ‘siliceous’, and ‘calcareous’ sponges.
B. n.
A substance resembling horn forming part of the skeleton of certain sponges.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > class Demospongiae > [noun] > substance forming skeleton in member of
keratose1865
spongin1868
1865 R. Patterson in Pop. Sci. Rev. Apr. 306 In the sponges in domestic use it [the skeleton] is principally composed of a substance termed Keratose.
1877 T. H. Huxley Man. Anat. Invertebrated Animals iii. 117 A skeleton, which consists..of bands and filaments of keratose, and secondly, of silicious spicula.
Derivatives
ˈkeratosed adj. rendered horny.
ΚΠ
1894 Lancet 3 Nov. 1025 The distinguishing mark between a coccidium and an invaginated or keratosed cell.
This entry has not yet been fully updated (first published 1901; most recently modified version published online March 2022).
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adj.n.1849