phyllocystn.
/ˈfɪlə(ʊ)sɪst/, U.S. /ˈfɪləˌsɪst/ Zoology.
The cavity within a bract (bract n. 2) of a hydrozoan.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Hydrozoa > member of > zooid > protective > cyst or cavity in
phyllocyst1859
1859 T. H. Huxley Oceanic Hydrozoa 14 They always contain a diverticulum of the somatic cavity, or phyllocyst.
1870 H. A. Nicholson Man. Zool. I. ix. 95 They [sc. hydrophyllia or bracts] are composed of processes of both ectoderm and endoderm..and they always contain a diverticulum from the somatic cavity, which is called a ‘phyllocyst’.
1877 T. H. Huxley Man. Anat. Invertebrated Animals iii. 139 Phyllocyst or cavity of hydrophyllium with its process.
1950 R. W. Miner Field Bk. Seashore Life iii. 160 Subfamily Abylinae... Bracts six-sided-prismatic, with a vertically descending phyllocyst.
Derivatives
phyllo'cystic adj. rare relating to or of the nature of a phyllocyst.Apparently only attested in dictionaries or glossaries.
ΚΠ
1890 Cent. Dict. Phyllocystic.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
<
n.1859