IPA: /ˌɛrɪˈθɛmətəs/
KK: /ˌɛrɪˈθɛmətəs/
Relating to or characterized by redness of the skin, often due to inflammation or irritation.
The doctor noted that the patient's skin was erythematous, indicating a possible allergic reaction.
Erythematous is formed from "erythros" (meaning red) and the suffix "-atous" (indicating a condition or state). The word describes a condition characterized by redness of the skin.
Think of 'erythros' meaning red, and remember that 'erythematous' refers to a condition that causes redness.