actinia

/ak-tin-ee-uh/US // ækˈtɪn i ə //UK // (ækˈtɪnɪə) //

放线菌,放线虫,放线杆,放线菌素

Definitions

n.名词 noun

1
plural ac·tin·i·ae [ak-tin-ee-ee], /ækˈtɪn iˌi/, ac·tin·i·as.
- : a sea anemone, especially of the genus Actinia.

Each several coral-individual is equivalent to a single living polyp (actinia).
The Actinia gemmacia, which is like a gorgeous sunflower, is said to be the most voracious of its kind.
One of the most common among the many varieties of sea-anemones is the Actinia mesembryanthemum.
Unlike Actinia, it is fixed to submarine bodies, to which it is glued in very early life, and cannot change its place.
Unlike Actinia, its body is supported by a stony skeleton of calcareous plates arranged edgewise so as to radiate from the centre.