| colloid | <chemistry> Microscopic particles suspended in some sort of liquid medium. The particles are between one nanometre and one micrometre in size and can be macromolecules. (09 Oct 1997) |
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| colloid acne | Yellow papules developing in sun-damaged skin of the head and backs of the hands, composed of colloid material in the dermis resembling amyloid but with a different ultrastructure. Synonym: colloid acne, colloid pseudomilium, elastosis colloidalis conglomerata. Origin: L. Milium, millet (05 Mar 2000) |
| colloid adenoma | <tumour> A follicular adenoma of the thyroid, composed of large follicles containing colloid. Synonym: macrofollicular adenoma. (05 Mar 2000) |
| colloid bath | A bath prepared by adding soothing agents such as sodium bicarbonate or oatmeal to the bath water to relieve skin irritation and pruritus. (05 Mar 2000) |
| colloid bodies | Eosinophilic hyaline spherical body's seen in or just beneath the epidermis, particularly in lichen planus, formed by necrosis of individual basal cells. Synonym: colloid bodies. (05 Mar 2000) |
| colloid cancer | <tumour> A variety of adenocarcinoma in which the neoplastic cells secrete conspicuous quantities of mucin, and, as a result, the neoplasms are likely to be glistening, sticky, and gelatinoid in consistency. Synonym: colloid cancer, colloid carcinoma. (05 Mar 2000) |
| colloid carcinoma | <tumour> A variety of adenocarcinoma in which the neoplastic cells secrete conspicuous quantities of mucin, and, as a result, the neoplasms are likely to be glistening, sticky, and gelatinoid in consistency. Synonym: colloid cancer, colloid carcinoma. (05 Mar 2000) |
| colloid corpuscle | One of a number of small ovoid or rounded, sometimes laminated, bodies resembling a grain of starch and found in nervous tissue, in the prostate, and in pulmonary alveoli; of little pathological significance, and apparently derived from degenerated cells or proteinaceous secretions. Synonym: amniotic corpuscle, amylaceous corpuscle, amyloid corpuscle, colloid corpuscle. (05 Mar 2000) |
| colloid cyst | A cyst with gelatinous contents. (05 Mar 2000) |
| colloid degeneration | A degeneration similar to mucoid degeneration, in which the material is inspissated. (05 Mar 2000) |
| colloid goiter | A form of goiter in which the contents of the follicles increase greatly, causing pressure atrophy of the epithelium so that the gelatinous matter predominates in the tumour. Synonym: struma colloides. (05 Mar 2000) |
| colloid milium | Yellow papules developing in sun-damaged skin of the head and backs of the hands, composed of colloid material in the dermis resembling amyloid but with a different ultrastructure. Synonym: colloid acne, colloid pseudomilium, elastosis colloidalis conglomerata. Origin: L. Milium, millet (05 Mar 2000) |
| colloid pseudomilium | Yellow papules developing in sun-damaged skin of the head and backs of the hands, composed of colloid material in the dermis resembling amyloid but with a different ultrastructure. Synonym: colloid acne, colloid pseudomilium, elastosis colloidalis conglomerata. Origin: L. Milium, millet (05 Mar 2000) |
| colloid system | A combination of the two phases, internal and external, of a colloid solution; the various system's are: gas + liquid (foam); gas + solid (meerschaum); liquid + gas (fog); solid + gas (smoke); solid + liquid (sol); liquid + solid (gel); liquid + liquid (emulsion); solid + solid (coloured glass). (05 Mar 2000) |
| colloid theory of narcosis | That coagulation or flocculation of protein causes dehydration and reduction of metabolism. (05 Mar 2000) |