What does "c-reactive protein" mean?

A protein found in the blood, whose plasma concentrations are raised in patients with infection or inflammation.

C-reactive protein

noun

noun ·Rare ·Advanced level

Noun

1
A protein found in the blood, whose plasma concentrations are raised in patients with infection or inflammation. uncountable
2
a byproduct of inflammation; a globulin that is found in the blood in some cases of acute inflammation wordnet

On discovery (in 1930) the substance was observed to react to the C polysaccharide of pneumococcus.