| 释义 |
peritreme Zool.|ˈpɛrɪtriːm|
Also in L. form periˈtrema.
[a. F. péritrème (Audouin 18..), f. Gr. περί round + τρῆµα perforation, hole.]
a. A small chitinous ring surrounding a breathing-hole in an insect.
b. The margin of the aperture of a univalve shell: = peristome 2 a (Syd. Soc. Lex.).
1843Owen Comp. Anat. Invertebr. Gloss. 383 Peritrema.., the raised margin which surrounds the breathing holes of scorpions. 1870Nicholson Man. Zool. 203 Pulmonary sacs, opening upon the under surface..by..stigmata, each of which is surrounded by a raised margin, or ‘peritrema’. 1888Huxley & Martin Elem. Biol. iv. 274 The mouth or peritreme of the shell [of a snail].
So periˈtrematous a., surrounding an aperture; belonging to the peritreme.
1890in Cent. Dict. 1893in Syd. Soc. Lex. |