peristome
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Peristome — Péristome Schéma montrant l’emplacement du péristome. Le terme péristome, qui nous vient directement de la langue grecque et veut dire « autour de la bouche », est employé pour décrire diverses structures entourant l’ouverture d un… … Wikipédia en Français
péristome — [ peristɔm; peristom ] n. m. • 1803; de péri et gr. stoma « bouche » ♦ Bot. Couronne dentelée selon laquelle l opercule se détache de l urne (chez les mousses). ♢ Zool. Région qui entoure la bouche de certains animaux inférieurs. Spécialt Sillon… … Encyclopédie Universelle
péristomé — péristomé, ée (pé ri sto mé, mée) adj. Terme de botanique. Qui est muni d un péristome … Dictionnaire de la Langue Française d'Émile Littré
Peristome — Per i*stome, n. [Pref. peri + Gr. ?, ?, mouth.] 1. (Bot.) The fringe of teeth around the orifice of the capsule of mosses. It consists of 4, 8, 16, 32, or 64 teeth, and may be either single or double. [1913 Webster] 2. (Zo[ o]l.) (a) The lip, or… … The Collaborative International Dictionary of English
peristome — [per′ə stōm΄] n. [ModL peristoma: see PERI & STOMA] 1. Bot. the fringe of teeth around the opening of the spore case in mosses 2. Zool. the area or parts surrounding the mouth or a mouthlike part of various invertebrates peristomial [per′istō′mē… … English World dictionary
Peristome — The word peristome is derived from the Greek peri, meaning around or about , and stoma, mouth . It is a term used to describe various anatomical features that surround an opening to an organ or structure. The term is used in plants and… … Wikipedia
Péristome — Schéma montrant l’emplacement du péristome … Wikipédia en Français
peristome — noun a) One or two rings of tooth like appendages surrounding the opening of the capsule of many mosses. 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… … Wiktionary
peristome — noun Etymology: New Latin peristoma, from peri + Greek stoma mouth more at stomach Date: circa 1796 1. the fringe of teeth surrounding the orifice of a moss capsule 2. the region around the mouth in various invertebrates • peristomial adjective … New Collegiate Dictionary
peristome — n. [Gr. peri, around; stoma, mouth] 1. The region surrounding the mouth. 2. (ANNELIDA) Segment modified to form part of the head and surround the mouth; buccal segments; see prostomium. 3. (ARTHROPODA: Insecta) Membranous tissue around the base… … Dictionary of invertebrate zoology
peristome — peristomal, peristomatic /per euh steuh mat ik/, peristomial, adj. /per euh stohm /, n. 1. Bot. 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. 2 … Universalium
