Definition, Meaning, Synonyms & Anagrams | English word UMBO

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Definitions of UMBO

1. (historical) The boss of a shield, at or near the middle and usually projecting, sometimes in a sharp spike.
2. (biology) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane.

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Examples of Using UMBO in a Sentence

• The cone scales have a flat to pyramidal apophysis (the external part of the cone scale), with a small prickle on the umbo (central boss or protuberance).
• He soon receives an information package with a photo of his foster child, a small Tanzanian boy named Ndugu Umbo, to whom he relates his life in a series of candid, rambling letters.
• Subfamily Pinoideae (Pinus): cones are biennial, rarely triennial, with each year's scale-growth distinct, forming an umbo on each scale, the cone scale base is broad, concealing the seeds fully from abaxial (below the phloem vessels) view, the seed is without resin vesicles, the seed wing holds the seed in a pair of claws, leaves have primary stomatal bands adaxial (above the xylem) or equally on both surfaces.
• Their shells are D-shaped, and attached to the substrate with strong byssal fibers, which come out of their umbo on the dorsal (hinged) side.
• In conifers where the cone develops over more than one year (such as pines), the first year's growth of a seed scale on the cone, showing up as a protuberance at the end of the two-year-old scale, is called an umbo, while the second year's growth is called the apophysis.
• Since retiring from the field, he launched Umbo, a functional mushroom supplement company alongside former UFC Champion Rashad Evans.
• Texas pinyon differs from both Mexican and Colorado pinyons in the very small, recessed umbo on the cone scales (larger and knob-like on other pinyons).
• It is distinguished from other species in section Vaginatae by its lack of any kind of umbo on its pileus, its short pileus striae, and its distinct pale orange to pale salmon coloration when young.
• It has a cap that is less than 4 cm across, hygrophanous, conic to campanulate to plane, usually with an umbo.
• 5 cm in diameter, obtusely conic to convex, and the margin is initially turned inwards, later becoming broadly convex to flattened or somewhat umbilicate while retaining a slight umbo, and at times quite irregular.
• The cap is 1–6 cm, conical to convex, tan brown, hygrophanous, margin striate when moist, and often has a broad umbo.
• 5–5 cm diameter, buff to brown, often with greenish tones, conic to convex or plane in age, with or without an umbo, with appressed fibrillose squamules on the cap which are more frequent towards the center, and an incurved margin.
• It is a benthic shallow water species and is typically found in soft-bottom silty habitats, with its narrow anterior end (umbo) burrowed down and attached to underground substrate by its byssal threads.
• Cap: 1 – 3 cm in diameter, initially subconical to campanulate (bell-shaped), expanding to plano-convex with an umbo.
• Adult strophomenids lack an opening for the pedicle (stalk), so in life, they either lay free or cemented the ventral valve (lower shell) onto a firm substrate at the umbo (hinge).
• The cap is campanulate (bell-shaped), and later flattens, but retains a broad umbo (shield-like central boss).
• Cap: 2 – 6 cm, convex to subumbonate, brownish-yellow, hygrophanous, margin striate when moist, often with an orangish center, broad umbo and wavy margin.
• 5 cm in diameter, conic to convex, with an acute umbo or papilla, not viscid, glabrous, slightly translucent-striate, silky white fibrils when young that fade in age, hygrophanous, lubricous, reddish brown to yellowish brown or clay color, becoming blackish.
• The cap's color varies from grayish brown to dark brown and the shape ranges from bell-like to bluntly conical to flattened with an umbo.
• With this species, as with many in its family Donacidae, it's easy to mistake the orientation of the valves, that is, to locate wrong the anterior and posterior ends of the animal and thus to mistake the right valve for the left one and viceversa (if there's no soft body left to give a reference), because the wedge clam's valves have some distinct features which are the opposite to what we see in the majority of the bivalves and can lead to confusion if we try to orientate the valves using these: first, Donax's umbo points backwards, towards the posterior end (instead of pointing forward, which is the common thing to happen in other bivalve families such as Veneridae); second, the anterior half of the valve (if you divide the valve in two by tracing a transverse axis from the umbo's point) is bigger, broader, more elongate, extends further away, while the posterior half is much shorter and reduced, which is exactly the opposite to the norm.

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