redness
n. B2 Upper Intermediate US //ˈɹɛdnəs// UK //ɹˈɛdnəs// red·ness
n. the state of having a red color, especially when it is caused by something like a burn or a rash.
n. the state or quality of being red, particularly when caused by inflammation or a physical reaction.
The redness on her face disappeared after she applied the cream.
The doctor examined the redness around the wound to determine if it was a sign of infection.
The sudden redness of the skin was a clear indicator that the patient had developed an allergic reaction to the new medication within minutes of administration.
From Middle English reednes, rednesse, from Old English rēadnes (“redness”), equivalent to red + -ness.