English: Varicella-zoster
Welsh: Varicella-zoster
Subject: Iechyd
Welsh definition: Enw’r feirws sy’n achosi’r haint varicella / farisela (brech yr ieir).
Notes: Sylwer na Chymreigir enw’r feirws ei hun, ond y Cymreigir y term meddygol varicella / farisela, sef y term technegol am frech yr ieir.