peristome

[ per-uh-stohm ]

/ ˈpɛr əˌstoʊm /

noun

Botany. the one or two circles of small, pointed, toothlike appendages around the orifice of a capsule or urn of mosses, appearing when the lid is removed.

Zoology. any of various structures or sets of parts that surround or form the walls of a mouth or mouthlike opening.

Origin of peristome

From the New Latin word peristoma, dating back to 1790–1800. See peri-, -stome

OTHER WORDS FROM peristome

per·i·sto·mal, per·i·sto·mat·ic

[per-uh-stuh-mat-ik], /ˌpɛr ə stəˈmæt ɪk/, per·i·sto·mi·al, adjective

Words nearby peristome

peristalsis, peristaltic, Peristéri, peristerite, peristole, peristome, peristyle, peristylium, peritectic, peritectomy, peritendineum

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for peristome

Peristome with nine ovate blunt feet, which are as long as the cephalis, little curved and convergent.
Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index|Ernst Haeckel
Summit of an open spore-case of a Moss, which has a peristome of 16 pairs of teeth.
The Elements of Botany|Asa Gray
Peristome small, constricted with a corona of numerous radial feet.
Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index|Ernst Haeckel
Coronal of the peristome with the same number of short, divergent feet, alternating with the larger pores.
Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index|Ernst Haeckel

Peristome with a coronet of six to nine broad lamellar feet (in Ehrenberg's figure broken off).
Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index|Ernst Haeckel

British Dictionary definitions for peristome

peristome

/ (ˈpɛrɪˌstəʊm) /

noun

a fringe of pointed teeth surrounding the opening of a moss capsule

any of various parts surrounding the mouth of invertebrates, such as echinoderms and earthworms, and of protozoans

Derived forms of peristome

peristomal or peristomial, adjective

Word Origin for peristome

C18: from New Latin peristoma, from peri- + Greek stoma mouth

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for peristome

peristome

[ pĕr′ĭ-stōm′ ]

A fringe of toothlike appendages surrounding the mouth of the spore capsule of some mosses. The teeth unfold under damp conditions and curl up under dry conditions to disperse spores gradually.

The area or parts around the mouth in certain invertebrates, such as the echinoderms.

单词	peristome
释义	peristome [ per-uh-stohm ] / ˈpɛr əˌstoʊm / noun Botany. the one or two circles of small, pointed, toothlike appendages around the orifice of a capsule or urn of mosses, appearing when the lid is removed. Zoology. any of various structures or sets of parts that surround or form the walls of a mouth or mouthlike opening. Origin of peristome From the New Latin word peristoma, dating back to 1790–1800. See peri-, -stome OTHER WORDS FROM peristome per·i·sto·mal, per·i·sto·mat·ic [per-uh-stuh-mat-ik], /ˌpɛr ə stəˈmæt ɪk/, per·i·sto·mi·al, adjective Words nearby peristome peristalsis, peristaltic, Peristéri, peristerite, peristole, peristome, peristyle, peristylium, peritectic, peritectomy, peritendineum Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for peristome Peristome with nine ovate blunt feet, which are as long as the cephalis, little curved and convergent. Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index\|Ernst Haeckel Summit of an open spore-case of a Moss, which has a peristome of 16 pairs of teeth. The Elements of Botany\|Asa Gray Peristome small, constricted with a corona of numerous radial feet. Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index\|Ernst Haeckel Coronal of the peristome with the same number of short, divergent feet, alternating with the larger pores. Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index\|Ernst Haeckel Peristome with a coronet of six to nine broad lamellar feet (in Ehrenberg's figure broken off). Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index\|Ernst Haeckel British Dictionary definitions for peristome peristome / (ˈpɛrɪˌstəʊm) / noun a fringe of pointed teeth surrounding the opening of a moss capsule any of various parts surrounding the mouth of invertebrates, such as echinoderms and earthworms, and of protozoans Derived forms of peristome peristomal or peristomial, adjective Word Origin for peristome C18: from New Latin peristoma, from peri- + Greek stoma mouth Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for peristome peristome [ pĕr′ĭ-stōm′ ] A fringe of toothlike appendages surrounding the mouth of the spore capsule of some mosses. The teeth unfold under damp conditions and curl up under dry conditions to disperse spores gradually. The area or parts around the mouth in certain invertebrates, such as the echinoderms. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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