| 词汇 | umbo |
| 释义 | umbo noun[ C ] uk /ˈʌm.bəʊ/ us /ˈʌm.boʊ/pluralumbonesuk /ˈʌm.bəʊ.niːz/ us /ʌmˈboʊ.niːz/orumbos/ˈʌm.bəʊz/ us /ˈʌm.boʊz/ umbonoun[C] (EAR)anatomy specialized a small rounded part at the end of the malleus (= a very small bone that carries sound from the eardrum to the inner ear): The patient had congestion around the umbo. The lateral surface of the membrane is concave and the most depressed part of this is the umbo. Cells formed in the centre of the tympanic membrane migrate outwards from the umbo to the walls of the ear canal. Running upward and slightly forward from the umbo is a reddish-yellow streak produced by the manubrium of the malleus. The malleolar stria is a stripe on the membrane tympani from the malleolar prominence to the umbo. The ear antihelix antitragus audiological audiology auditory tube cochlea eardrum earlobe incus labyrinth labyrinthitis malleus mastoid cell membranous labyrinth organ of Corti round window saccule sacculus semicircular canal snug piercing umbonoun[C] (SHELL)biology specialized a raised, rounded part at the place where the two shells of a mollusc (= an animal with a soft body inside a shell) join: Such material is particularly common around the valve margins and umbones. The surface of the shell has fine concentric ridges which disappear towards the umbo. Related word umbonal This genus has an arched instead of an angulate hinge line, and the hinge teeth series do not overlap beneath the umbos. The shells are moderately large, and the ventral umbo is broad and low, extended a little beyond hinge. This invariably starts at the thickest part of the shell, in the umbones of brachiopods and bivalves, and spreads outwards. Sea creatures abalone amphipod anemone barnacle barrier reef cowrie crab cray crayfish crustacean littleneck clam lobster marron mollusc mussel shellfish shipworm shrimp snow crab soft-shell clam Examples of umboumbo Ventral umbo broad, moderately convex; median sulcus broad, shallow, beginning anterior to beak. Ventral beak blunt, incurved; umbo broad, rounded, evenly convex; median sulcus absent. There is a large auricle or flap on one side of the umbo. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is still a subject of debate if it is an umbo sheld or a gate decoration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are a number of indistinct, irregular ribs that flare out from the umbo. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The two series meet at the umbo with a group of four to five orthomorphic teeth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The umbo of the shell is in the shape of a human female or bird's head. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The flesh is somewhat thick under the umbo, but becomes abruptly thinner over the area of the margin (about 0.15 mm). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The central part of the pars tensa is tented inwards at the level of the tip of malleus and is called the umbo. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The ligament is straight with an umbo which is central to subcentral. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pileus is 5mmin 1 in diameter and has a convex shape, sporting a raised central region (an umbo). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The mushrooms have olive-brown, slimy caps with dark streaks and a dark umbo; the caps measure 3to12 cm in diameter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It bears a broad central umbo and reaches 5 cm in diameter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They vary in shape and lack an apophysis and an umbo. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is usually less than 5 cm across, has a slightly darker blunt umbo and an incurved margin when young. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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