serum

Definitions


[ˈsɪərəm], (Noun)

Definitions:
- an amber-coloured, protein-rich liquid which separates out when blood coagulates
(e.g: the researchers examined blood serum obtained from 471 men and women)

- the blood serum of an animal used to provide immunity to a pathogen or toxin by inoculation or as a diagnostic agent
(e.g: doctors treated the bites of carpet vipers with serum produced from local snakes)


Phrases:

Origin:
late 17th century: from Latin, literally ‘whey’




definition by Oxford Dictionaries