phylum cnidaria, Phylum Cnidaria

(biology) the major taxonomic group of animals and plants; contains classes

（生物学）動物や植物の主要な分類群。クラス（綱）を含む。

one of two forms that coelenterates take (e.g. a hydra or coral): usually sedentary with a hollow cylindrical body usually with a ring of tentacles around the mouth

刺胞動物の2つの形態の1つ（例えば、ヒドラやサンゴ）：通常は座りがちな中空の円筒形の体を持ち、通常は口の周りに触手の輪を持つもの

radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms

放射相称の動物で、１つの開口部と刺胞を持つ触手を持つ袋状の体をしている。ポリプ型とクラゲ型が存在する。

one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelatinous umbrella-shaped body and tentacles

刺胞動物の2つの形態のうちの1つ: 刺胞動物の生涯の中で遊泳する有性生殖段階。ゲル状の傘型の体と触手を持つ。

coelenterates in which the polyp stage is absent or at least inconspicuous: jellyfishes

ポリプの段階が存在しないか、あるいは少なくとも目立たない刺胞動物 (クラゲなど)

any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans

通常は海洋性で自由に泳ぐヒドロ虫や鉢虫の有性生殖形態を構成する多くの腔腸動物の総称

multicellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system

組織と臓器に分化した細胞を持ち、通常は消化腔と神経系を持つ多細胞動物