peristome
Noun
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004
Noun
peristome (plural peristomes)
- (botany) One or two rings of tooth-like appendages surrounding the opening of the capsule of many mosses.
- 1911, Bryophyta, article in Encyclopædia Britannica Eleventh Edition,
- Its removal does not, however, leave the mouth of the capsule wide open, for around the margin are two circles of pointed teeth forming the peristome.
- 1911, Bryophyta, article in Encyclopædia Britannica Eleventh Edition,
- (zoology) The parts of or surrounding the mouths of numerous invertebrates.
- 1911, Polyp, article in Encyclopædia Britannica Eleventh Edition,
- We can distinguish therefore in the body of a polyp the column, circular or oval in section, forming the trunk, resting on a base or foot and surmounted by the crown of tentacles, which enclose an area termed the peristome, in the centre of which again is the mouth. […] The mouth may be level with the surface of the peristome, or may be projecting and trumpet-shaped.
- 1911, Polyp, article in Encyclopædia Britannica Eleventh Edition,
- The lip, or edge of the aperture, of a spiral shell.
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004