actinianadj.n.
/akˈtɪnɪən/, U.S. /ækˈtɪniən/ Zoology.
A. adj.
Belonging to or characteristic of the order Actiniaria, comprising the sea anemones; = actiniarian adj.See note at actinia n.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Anthozoa > belonging to order Zoantharia > relating to suborder Achnaria
actinian1846
the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Anthozoa > belonging to order Zoantharia > relating to suborder Achnaria > belonging to genus Actinia
actinian1846
1846 Guy's Hosp. Rep. 2nd Ser. 4 281 In the minute structure of the actinian polype direct proofs may be obtained to confirm the view, that a follicle is not the ultimate link in the chain of morphological reductions.
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 742 It [sc. the ciliated larva] usually assumes the Actinian condition while in the free-swimming stage.
1928 T. A. Stephenson Brit. Sea Anemones I. p. viii The present monograph deals primarily with Actinian morphology.
1955 Science 23 Dec. 1232/2 Because of the long time periods required for this and other actinian responses, Batham and Pantin have termed them phasic.
2007 A. Seilacher in R. Pudritz et al. Planetary Syst. & Origins Life x. 201 (caption) In actinian resting places..slight lateral movements are expressed by concentric lines.
B. n.
A member of the order Actiniaria; an actiniarian, a sea anemone.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Anthozoa Actinozoa > order Zoantharia > suborder Actiniaria > member of
sea-nettle1601
red nettle1611
sea-spout1731
anemone1742
sea-anemone1742
sea-mushroom1742
sea-pudding1750
actinia1752
sea-carnation1768
sea star-flower1768
sea-sunflower1768
sea-daisya1776
sea-marigolda1776
sea-torchthistlea1776
insect-flower1791
sea-flower1850
aurora1858
actiniarian1874
actinian1876
1876 Proc. Royal Soc. 25 208 The Arctic Actinian Chrondactinia nodosa (Fabr.) was also procured here.
1928 T. A. Stephenson Brit. Sea Anemones I. p. viii I acknowledge the debt which I owe..for invaluable assistance during the early part of my study of Actinians.
1992 Copeia iii. 902/2 The host actinian represents the territorial center and primary source of defense for anemonefish.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online December 2021).
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adj.n.1846