fibroid🔊noun/ˈfaɪ.brɔɪd/Etymology From fibro- + -oid.1Medicine, Pathology, Sciences A benign tumour of the uterus that is composed of either fibrous connective tissue or muscle.2Medicine, Pathology, Sciences A fibroma.Derived termsfibroidectomy, fibroidlikeRelated termsfibroidal, fibroma, myoma