semilunate

Semilunar.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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semilunar

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Now, the new data obtained by the Vargas lab has revealed the first developmental evidence that the bird semilunate was formed by the fusion of the two dinosaur bones.

How Dinosaur Arms Turned Into Bird Wings

Like scombrids, bluefish are streamlined and have elliptical body cross sections, but their tails are flexible and semilunate, suited for burst swimming as well.

Effects of seasonal change on activity rhythms and swimming behavior of age-O bluefish (Pomatomus saltatrix) and a description of gliding behavior

Leaves 6-9 in number, rigid, thick, persistent, rosulate, curved; sheaths broadly semilunate, to 2 cm high, 5 cm wide, light brown inside, dark castaneous, lustrous, glabrous outside, the upper margins serrate with short spines; blades oblong-triangular, long attenuate, filiform at the apex, 17-33 cm long, 2.5 cm wide at the base, dark green to purple red, gray lepidote on both surfaces, stronger beneath; margins serrate with strong, retrorse, black, 3-7 mm long spines, covered by white scales, 6-8 mm apart.

Puya pachyphylla sp. nov. (Bromeliaceae) and new synonyms of Puya tuberosa from Bolivia