| secondary axis | Any ray passing through the optical centre of a lens. (05 Mar 2000) |
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| 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) |
| secondary degeneration | <medicine> A form of degeneration occurring in nerve fibres as a result of their division; so called from Dr. Waller, who published an account of it in 1850. Source: Websters Dictionary (01 Mar 1998) |
| secondary dementia | Chronic dementia following and due to a psychosis or some other underlying disease process. Senile dementia, dementia of Alzheimer's disease developing after age 65. Toxic dementia, dementia caused by an exogenous agent. (05 Mar 2000) |
| secondary dentin | Dentin formed by normal pulp function after root end formation is complete. (05 Mar 2000) |