| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
|---|---|
| OEM | opposite ear masked; original electronic manufacturer |
| OT | objective test; oblique talus; occlusion time; occupational therapist, occupational therapy; ocular ... |
| PTO | Klemperer's tuberculin [Ger. Perlsucht Tuberculin Original] |
| TO | old tuberculin; oral temperature; original tuberculin; target organ; telephone order; thoracic ortho... |
| strength-duration curve | A graph relating the intensity of an electrical stimulus to the length of time it must flow to be effective. See: chronaxie, rheobase. (05 Mar 2000) |
|---|---|
| ionic strength | Symbolised as g/2 or I and set equal to 0.5σmizi2, where mi equals the molar concentration and zi the charge of each ion present in solution; if molar concentrations (ci) are used instead of molality (and the solution is dilute), then I == 0.5(1/ρo)σcizi2 where ρo is the density of the solvent; a number of biochemically important events (e.g., protein solubility and rates of enzyme action) vary with the ionic strength of a solution. (05 Mar 2000) |
| tensile strength | The maximum stress a material subjected to a stretching load can withstand without tearing. (12 Dec 1998) |
| yield strength | The amount of stress at which a permanent (plastic) deformation in a component becomes measurable (usually taken as 0.2% permanent strain). (05 Mar 2000) |
| ultimate strength | The maximum stress achieved prior to failure of a component on a single application of the load. (05 Mar 2000) |
| fatigue strength | The stress level below which a particular component will survive an indefinite number of load cycles (typically about 50% of the ultimate strength of the component). (05 Mar 2000) |
| azo itch | Itching that occurs among workers in azo dyes. (05 Mar 2000) |
| baker's itch | An eruption on the hands and arms of bakers due to an allergic reaction to flour or other substances handled, or to the grain itch mite. (05 Mar 2000) |
| barber's itch | Tinea of the beard, occurring as a follicular infection or as a granulomatous lesion; the primary lesions are papules and pustules. Synonym: barber's itch, folliculitis barbae, ringworm of beard, tinea sycosis, trichophytosis barbae. (05 Mar 2000) |
| bath itch | Itching produced by inadequate rinsing off of soap or by overdrying of skin from excessive bathing. Synonym: bath itch, pruritus balnea. (05 Mar 2000) |
| mad itch | A highly contagious herpes virus infection affecting the central nervous system of swine, cattle, dogs, cats, rats, and other animals. (12 Dec 1998) |
| Malabar itch | An eruption consisting of a number of concentric rings of overlapping scales forming papulosquamous patches scattered over the body; it occurs in tropical climates and is caused by the fungus Trichophyton concentricum. Synonym: herpes desquamans, Malabar itch, Oriental ringworm, scaly ringworm, tinea tropicalis, Tokelau ringworm. (05 Mar 2000) |
| grain itch | A cutaneous eruption occasionally noted in farmers and grain handlers, caused by the action of the mite Pyemotes ventricosus. (05 Mar 2000) |
| rice itch | Schistosomiasis caused by schistosoma japonicum. It is endemic in the far east and affects the bowel, liver, and spleen. (12 Dec 1998) |
| grocer's itch | A vesicular dermatitis seen in grocers and bakers who handle sugar or flour; caused by a mite of the genus Glycophagus. (05 Mar 2000) |