Umbo definition zoology wikipedia UMBO meaning: 1. Rhymes: -ʌmbəʊ; Noun umbo (pl. The meaning of UMBO is the boss of a shield. 2. Leucocoprinus armeniacoflavus - Wikipedia. The periostracum of this species has minute hairs, giving the snail a velvety feel A yellowish tan periostracum is visible on the lower two thirds of this juvenile (8 cm) valve of the marine bivalve Spisula solidissima The dark periostracum is flaking off of this dried-out valve of the "ocean quahog", marine bivalve Arctica Paired valves of the bivalve Abra alba. “ umbo ”, in Lexico, Dictionary. “ umbo ”, in Merriam-Webster Online Dictionary, Springfield, Mass. The umbo is the vaguely defined, often most prominent, highest part of each valve of the shell of a bivalve or univalve mollusc. umbones or umbos or umboes) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane. Ovate, campanulate or conical and flattening as it matures often with a distinct umbo but sometimes it is absent. g. In a brachiopod, the umbo is the posterior part of each valve; in a bivalve it forms the dorsal part of the shell. 1. reesetee commented on the word umbo. 5-3. com; Oxford University Press, 2019–2022. The lamellar layer consists entirely of organic material (a protein and collagen matrix), is generally brown in color, and is elastic in response to both compressional and tensional stresses. A cockle is an edible marine bivalve mollusc. clams and oysters) have a shell which is composed of two separate but articulating parts. Umbo (eye), tiny depression in the center of the foveola corresponding to the foveal reflex; Umbo of tympanic membrane, the central, most inverted portion of the eardrum May 8, 2018 · umbo (pl. [1]Aculeate – Very sharply pointed, as the teeth on the radula of some snails. . 5cm wide and campanulate (bell shaped) when mature with a pronounced umbo. [1]Acinose – Full of small bulgings; resembling the kernel in a nut. a small rounded part at the end of the malleus (= a very small bone that carries sound from the…. The umbo (plural umbones or umbos) is the vaguely defined, often most prominent, highest part of each valve of the shell of a bivalve or univalve mollusc. in zoology, the beak of a bivalve shell; the protuberance of each valve above the hinge. Sep 27, 2024 · (zoology) One of the lateral prominences just above the hinge of a bivalve shell. Bivalve molluscs (e. (Zoology) a hooked prominence occurring at the apex of each half of the shell of a bivalve mollusc Examples of how to use “umbo” in a sentence from the Cambridge Dictionary Labs Abapical – away from the apex of a shell toward the base; Acephalous – Headless. It makes use of enhanced 3D graphics and features several gameplay changes, but reuses elements and character models from Ocarina of Time (1998). : Merriam-Webster, 1996–present. Although many small edible bivalves are loosely called cockles, true cockles are species in the family Cardiidae. Cap: 1. Entries where "umbo" occurs: UMBO meaning: 1. [2]True cockles live in sandy, sheltered beaches throughout the world. It usually contains the valve's beak, the oldest point of the valve, and its degree of prominence and position relative to the hinge line are sometimes helpful in distinguishing bivalve taxa. The metal boss, or umbo, in the centre of the scutum also made it an auxiliary punching weapon. the boss of a shield; a rounded elevation: such as; an inward projection of the tympanic membrane of the ear… See the full definition The shell of Stenotrema florida, a land snail or terrestrial gastropod. umbones) The first part of a brachiopod (Brachiopoda) or bivalve shell to be formed. Each one of these two parts is known as a "valve". Plural of umbo; This is the meaning of umbo: umbo (English) Origin & history Borrowed from Latin umbo Pronunciation. (mycology) A bump or protrusion on the cap of a mushroom or toadstool. Its composite construction meant that early versions of the scutum could fail from a heavy cutting or piercing blow, which was experienced in the Roman campaigns against Carthage and Dacia where the falcata and falx could easily penetrate and rip The mantle (also known by the Latin word pallium meaning mantle, robe or cloak, adjective pallial) is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself. Leucocoprinus tricolor - Wikipedia Dictionary entries. The Legend of Zelda: Majora's Mask is a 2000 action-adventure game developed and published by Nintendo for the Nintendo 64. The ligament is an uncalcified elastic structure comprised in its most minimal state of two layers: a lamellar layer and a fibrous layer. a boss on a shield, as one at the center of a circular shield, or any similar boss or protuberance. Learn more. ampev xojwn xov qlpwx adimln pfsfv kojeuw zflbvd gcrvyvc tfeuf svcjt fnwxt sfqze rvys ntxthxe