umbo

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Related to umbos: Umbo of tympanic membrane
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Words related to umbo

a slight rounded elevation where the malleus attaches to the eardrum

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Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Most of these mytilid species have a low umbo, round posterior margin, and more pointed anterior margin, although A.
SCANNING ELECTRON MICROSCOPIC AIDS FOR IDENTIFICATION OF LARVAL AND POST-LARVAL BIVALVES
Concha alargada, rectangular, inequilateral con los umbos cerca del extremo anterior cuyo borde es redondeado, parte posterior con bordes dorsal y ventral casi paralelos, el borde posterior inclinado dorsalmente es irregular por las proyecciones de las costillas; con 17 costillas radiales con interespacios amplios, las anteriores son finamente noduladas, las del disco oblicuamente aplanadas, y las posteriores mas gruesas, redondeadas y escamosas; charnela con dos dientes cardinales y dos laterales en cada valva.
Adiciones a la fauna de bivalvos del mar peruano
The periostracum is dark, brownish-green, opaque and usually eroded, especially in the umbo area (u).
A new occurrence of Anodontites tenebricosus (Bivalvia: Mycetopodidae) in the Sapucai river basin, Sao Paulo, Brazil: environmental and conchological aspects
This represents 17.7% of the total 9733 right valves from the square, the difference consisting of umbos from broken valves.
Morphometric analyses of Batissa violacea shells from Emo (OAC), Gulf Province, Papua New Guinea
Umbos rounded and prominent, globose and without sculpture.
Early Cretaceous non-marine bivalves from the Cameros and Basque-Cantabrian basins of Spain
Their periostracum is fibrous and is usually eroded near the umbos which have a salmon-pink color.
Rangia and marsh clams, Rangia cuneata, R. flexuosa, and Polymesoda caroliniana, in eastern Mexico: distribution, biology and ecology, and historical fisheries
Mean shell length (SL) - the greatest linear dimension from the tip of the umbos to the posterior margin of the shell - of the mussels used for each treatment was 17.8 mm ([+ or -]3.2 SD, n = 28) at [Po.sub.2] = 7.7 torr; 15.4 mm ([+ or -]2.7, n = 28) at 15.4 torr; 15.3 mm ([+ or -]2.4, n = 28) at 23.1 torr; 17.4 mm ([+ or -]2.9, n = 28) at 30.9 torr and 16.6 mm ([+ or -]2.6, n = 48) at 154.3 torr.
Effects of hypoxia and low-frequency agitation byssogenesis in the freshwater mussel Dreissena polymorpha (Pallas)
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