rostellaradj.
/rɒˈstɛlə/, U.S. /rɔˈstɛlər/, /rɑˈstɛlər/ Botany and Zoology.
Of, relating to, or situated on a rostellum (in various senses). Cf. rostellate adj.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [adjective] > of parts > relating to embryo or radicle
rostellate1800
orthotropous1819
peritropal1819
radicular1819
rostelliform1819
homotropous1829
heterotropous1830
heterotropal1832
axile1839
amphitropous1841
homotropal1844
rostellara1845
amphitropal1847
peritropous1849
polyembryonate1864
polyembryonic1864
proembryonic1875
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Platyhelminthes > [adjective] > relating to tape-worms > relating to hooked part of head
rostellara1845
a1845 W. Griffith Posthumous Papers bequeathed East India Company (1851) III. 256 Stigmata opposed to the two abortive stamens, d e that opposed to the perfect stamen, and having a rostellar form.
1877 T. H. Huxley Man. Anat. Invertebrated Animals iv. 212 The Diphyllidea have..two armed rostellar prominences.
1885 H. O. Forbes Naturalist's Wanderings Eastern Archipel. 93 An insect, to secure the pollinia, would require to alight on the margin of the rostellar platform.
1916 Trans. Amer. Microsc. Soc. 35 26 The four excretory canals..unite in the scolex to form a ring.., which lies in the tissue of the rostellar sac around the body of the rostellum.
1967 Jrnl. Wildlife Managem. 31 267/1 The scoleces recovered were too mutilated to reveal whether one or two rows of rostellar hooks were present on the retractable rostellum.
2001 N. A. van der Cingel Atlas Orchid Pollination viii. 227/1 This rather speedy movement is caused by the contraction of the rostellar gland which adheres the pollinium to the insect's head.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).
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adj.a1845