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Subarachnoid space
The space between the arachnoid and the pia mater through which the cerebrospinal fluid…
Subclavian/subclavian vein
The subclavian vein is the large vein behind the collarbone which is sometimes used…
Subclinical infection
An infection in which symptoms are sufficiently mild to escape diagnosis other than by…
Spore (or endospore)
A dormant, tough structure produced by some Gram-positive bacteria to ensure their survival through…
Sporicidal disinfectant
An agent that destroys microbial spores. Spores are more difficult to kill than vegetative…