Relating to or caused by erythrism; describing an organism affected by excessive red pigmentation.
From 'erythrism' plus the adjectival suffix '-al,' following standard English word formation patterns. It appears in scientific literature describing animals with red color abnormalities.
Erythrismal is the adjective form scientists use when they spot an unusually red animal and want to explain why—it's the technical way of saying 'this creature won the genetic lottery for redness.'
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