What is "erythro-"

before vowels, erythr-, word-forming element meaning "red," from Greek erythro-, comb. form of erythros "red" (in Homer, also the color of copper and gold); see red (1).

before vowels erythr-, word-forming element meaning "red," from comb. form of Greek erythros "red" (see red (1)).

pre. used to form scientific terms meaning (term: red), or showing a relationship to red blood cells