| white blood cells | White blood cells (WBCs) are cells which circulate in the blood and lymphatic system and harbor in the lymph glands and spleen. They are part of the immune system responsible for both directly (t cells and macrophages) and indirectly (B-cells producing antibodies) attacking foreign invaders of the body. (12 Dec 1998) |
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| white cell cast | A cast in the urine composed of white blood cells. (05 Mar 2000) |
| white commissure | A narrow band of white substance bordering on the anterior median fissure of the spinal cord in front of the anterior gray commissure, and consisting of nerve fibres crossing over from one half of the spinal cord to the other. Synonym: commissura alba, anterior white commissure, commissura ventralis alba, ventral white column. (05 Mar 2000) |
| white corpuscle | Any type of leukocyte. (05 Mar 2000) |
| white diarrhoea | An infectious disease of chicks and other young birds caused by the bacterium Salmonella pullorum, which is carried in the ovaries of adult hens and appears in the eggs; in incubator-hatched birds, the disease usually involves the lungs and air sacs, but often spreads in flocks of young birds as an alimentary tract infection manifested by severe diarrhoea followed by septicaemia and death. Synonym: diarrhoea alba, white diarrhoea. (05 Mar 2000) |
| white-ear | <zoology> The wheatear. Source: Websters Dictionary (01 Mar 1998) |
| white-eye | <zoology> Any one of several species of small Old World singing of the genus Zosterops, as Zosterops palpebrosus of India, and Z. Coerulescens of Australia. The eyes are encircled by a ring of white feathers, whence the name. Synonym: bush creeper, and white-eyed tit. Source: Websters Dictionary (01 Mar 1998) |
| white fat | <anatomy> Connective tissue that has been specialised to store fat. See: adipocyte. (25 Jun 1999) |
| white fibre | White mammalian muscle fibres; larger in diameter than red fibres they have less myoglobin, sarcoplasm, and mitochondria, and contract more quickly. Synonym: collagen fibre. (05 Mar 2000) |
| white fingers | An occupational disease occurring in operators of pneumatic hammers who are exposed to cold. (05 Mar 2000) |
| white-foot | <veterinary> A white mark on the foot of a horse, between the fetlock and the coffin. Source: Websters Dictionary (01 Mar 1998) |
| white forelock | A triangular or diamond-shaped depigmented macule with white hairs, usually located in the anterior midline of the scalp, seen in piebaldism. (05 Mar 2000) |
| white friar | A mendicant monk of the Carmelite order, so called from the white cloaks worn by the order. See Carmelite. Source: Websters Dictionary (01 Mar 1998) |
| white-fronted | Having a white front; as, the white-fronted lemur. <zoology> White-fronted goose, the white brant, or snow goose. See Snow goose, under Snow. Source: Websters Dictionary (01 Mar 1998) |
| white gangrene | Death of a part accompanied by the formation of grayish white sloughs. Synonym: leukonecrosis. (05 Mar 2000) |