# C-reactive protein

> English word · Noun

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

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/c-reactive-protein