| butterball | <zoology> The buffel duck. Source: Websters Dictionary (01 Mar 1998) |
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| butterbird | <zoology> The rice bunting or bobolink; so called in the island of Jamaica. Source: Websters Dictionary (01 Mar 1998) |
| butterbump | <zoology> The European bittern. Origin: OE. Buttur the bittern + 5th bump. Source: Websters Dictionary (01 Mar 1998) |
| butterbur | <botany> A broad-leaved plant (Petasites vulgaris) of the Composite family, said to have been used in England for wrapping up pats of butter. Source: Websters Dictionary (01 Mar 1998) |
| buttercup | <botany> A plant of the genus Ranunculus, or crowfoot, particularly R. Bulbosus, with bright yellow flowers; called also butterflower, golden cup, and kingcup. It is the cuckoobud of Shakespeare. Source: Websters Dictionary (01 Mar 1998) |
| butterfish | <zoology> A name given to several different fishes, in allusion to their slippery coating of mucus, as the Stromateus triacanthus of the Atlantic coast, the Epinephelus punctatus of the southern coast, the rock eel, and the kelpfish of New Zealand. Source: Websters Dictionary (01 Mar 1998) |
| butterflies | Slender-bodies diurnal insects having large, broad wings often strikingly coloured and patterned. (12 Dec 1998) |
| butterfly | Origin: Perh. From the colour of a yellow species. AS. Buter-flege, buttor-fleoge; cf. G. Butterfliege, D. Botervlieg. See Butter, and Fly. <zoology> A general name for the numerous species of diurnal Lepidoptera. See: Illust. Under Aphrodite] Asclepias butterfly. See Asclepias. Butterfly fish, a kind of double clack valve, consisting of two semicircular clappers or wings hinged to a cross rib in the pump bucket. When open it somewhat resembles a butterfly in shape. Source: Websters Dictionary (01 Mar 1998) |
| butterfly eruption | Origin: Perh. From the colour of a yellow species. AS. Buter-flege, buttor-fleoge; cf. G. Butterfliege, D. Botervlieg. See Butter, and Fly. <zoology> A general name for the numerous species of diurnal Lepidoptera. See: Illust. Under Aphrodite] Asclepias butterfly. See Asclepias. Butterfly fish, a kind of double clack valve, consisting of two semicircular clappers or wings hinged to a cross rib in the pump bucket. When open it somewhat resembles a butterfly in shape. Source: Websters Dictionary (01 Mar 1998) |
| butterfly fragment | A broad triangular fragment that is commonly present in comminuted fractures of the diaphysis. (05 Mar 2000) |
| butterfly lung | Haemorrhagic markings appearing on an animal's lung after inoculation with Leptospira interrogans (L. Icterohaemorrhagiae). (05 Mar 2000) |
| butterfly patch | Origin: Perh. From the colour of a yellow species. AS. Buter-flege, buttor-fleoge; cf. G. Butterfliege, D. Botervlieg. See Butter, and Fly. <zoology> A general name for the numerous species of diurnal Lepidoptera. See: Illust. Under Aphrodite] Asclepias butterfly. See Asclepias. Butterfly fish, a kind of double clack valve, consisting of two semicircular clappers or wings hinged to a cross rib in the pump bucket. When open it somewhat resembles a butterfly in shape. Source: Websters Dictionary (01 Mar 1998) |
| butterfly pattern | Bilateral, symmetric, pulmonary alveolar opacities sparing the periphery, on chest radiographs; usually caused by pulmonary oedema. (05 Mar 2000) |
| butterfly rash | Origin: Perh. From the colour of a yellow species. AS. Buter-flege, buttor-fleoge; cf. G. Butterfliege, D. Botervlieg. See Butter, and Fly. <zoology> A general name for the numerous species of diurnal Lepidoptera. See: Illust. Under Aphrodite] Asclepias butterfly. See Asclepias. Butterfly fish, a kind of double clack valve, consisting of two semicircular clappers or wings hinged to a cross rib in the pump bucket. When open it somewhat resembles a butterfly in shape. Source: Websters Dictionary (01 Mar 1998) |
| butterfly vertebra | A hemivertebra or sagittally cleft vertebra that has a butterfly configuration on frontal radiographs; congenital in origin. (05 Mar 2000) |