| SSS | scalded skin syndrome; secondary Sjogren syndrome; sick sinus syndrome; specific soluble substance; ... |
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| secondary antibody response | An antibody made upon second (subsequent) exposure to an antigen, mostly of the class IgG. (09 Oct 1997) |
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| secondary aortic area | Region of the chest at the mid-left sternal bases where aortic diastolic murmurs are often best heard. (05 Mar 2000) |
| secondary atelectasis | A nonexpansion of the lungs after birth is known as primary atelectasis. Secondary atelectasis can occur at any age but is common in infants due to hyaline membrane disease. This form may also be seen in patients after surgery (general anaesthesia). See: atelectasis. (27 Sep 1997) |
| secondary axis | Any ray passing through the optical centre of a lens. (05 Mar 2000) |
| secondary buffer | See: Hamburger's law. (05 Mar 2000) |
| secondary calcium phosphate | CaHPO4-2H2O;used as a calcium and phosphorus dietary supplement. Synonym: calcium monohydrogen phosphate, secondary calcium phosphate. (05 Mar 2000) |
| secondary carcinoma | <tumour> A carcinoma that has appeared in a region remote from its site of origin, as in metastasis. Synonym: secondary carcinoma. (05 Mar 2000) |
| secondary cardiomyopathy | Disease that affects the myocardium secondarily to systemic disease, infection, or metabolic disease. (05 Mar 2000) |
| secondary caries | Caries of enamel beginning at the dento-enamel junction due to a rapid lateral spread of decay from the original decay. (05 Mar 2000) |
| secondary cataract | A cataract that accompanies or follows some other eye disease such as uveitis. Synonym: complicated cataract. A cataract occurring in the retained lens or capsule after a cataract extraction. Synonym: aftercataract. (05 Mar 2000) |
| secondary cementum | Cementum that forms on the root surface after eruption; it contains cementocytes. (05 Mar 2000) |
| secondary centre of ossification | This is the centre of bone formation appearing later than the punctum ossificationis primarium, usually in epiphysis. Synonym: punctum ossificationis secundarium, secondary point of ossification. (05 Mar 2000) |
| secondary choana | The definitive choana opening into the nasopharynx, after the nasal chambers have been lengthened by the formation of the secondary palate. Synonym: internal nostril. (05 Mar 2000) |
| secondary coccidioidomycosis | Progressive or disseminated extrapulmonary granulomatous lesions following primary coccidioidomycosis. Synonym: coccidioidal granuloma. (05 Mar 2000) |
| secondary constriction | A subsidiary narrowing of the chromosome associated in some cases with satellites. (05 Mar 2000) |