opelet
(ˈəʊplɪt)
[f. ope a. + -let.]
A name of a sea-anemone, Anemonia sulcata, so called because the tentacles cannot be retracted.
| 1860 Gosse Actinologia Britannica 162 The English name (Opelet) I have formed for it..alludes to the habitually open condition of the disk. Ibid. 165 No very special care is required to maintain the health and vigour of the Opelet in captivity. |