| 释义 |
perisarc Zool.|ˈpɛrɪsɑːk|
[f. Gr. περί around + σάρξ, σάρκ-α flesh, as if from a Gr. *περισάρκιον (cf. pericarp-ium): cf. Gr. περίσαρκος surrounded by flesh.]
The horny or chitinous case investing the cœnosarc in some Hydrozoa. Hence periˈsarcal, periˈsarcous adjs., pertaining to or consisting of the perisarc.
1871Allman Monogr. Gymnoblastic Hydroids i. p. xiv, Perisarc... The unorganized chitinous excretion by which the soft parts are to a greater or less extent invested. 1877Huxley Anat. Inv. Anim. iii. 133 It obviously answers to the perisarc of a Tubularian, and its presence in the embryo of the Hydra, in which no perisarc is developed by the adult, suggests [etc.]. 1888Rolleston & Jackson Anim. Life 245 The hydranths are lodged in perisarcal cups or hydrothecæ (= calycles). Ibid., This hydrophyton consists of the cœnosarc..and its perisarcal investment. |