Erythemal

Part of speech: adjective

Definitions

1. Connected to skin conditions involving redness due to expanded blood vessels near the surface
2. Relating to a medical condition characterized by skin redness from dilated blood vessels that may indicate inflammation or irritation
3. Pertaining to the appearance of redness on the skin, often caused by increased blood flow and associated with various dermatological issues

Etymology: Erythemal is a plain formation: the noun "erythema" with the adjective-forming suffix "-al" added. The noun itself comes from Greek "erythēma", meaning "redness", from "erythainein", "to redden", which is built on "erythros", "red". That root is ultimately connected to the Proto-Indo-European root "h₂el-", which also lies behind words for red and reddish colours in several other branches of the family. The suffix has a longer journey than the word it attaches to. "-al" passed from Latin "-ālis" through Old French "-al" and "-el" into Middle English, where it became a productive way to turn nouns into adjectives meaning "relating to" or "characterised by". English then attached it to scientific nouns freely, which is how "erythema" gained an adjective.

Synonyms: redness-causing