what is a adenoma
Noun. 1. adenoma-a benign epithelial tumor of glandular origin. benign tumor, benign tumour, nonmalignant neoplasm, nonmalignant tumor, nonmalignant tumour-a tumor that is not cancerous.fibroadenoma-benign and movable and firm and not tender tumor of the breast; common in young women and caused by high levels of estrogen.oun. 1. adenoma-a benign epithelial tumor of glandular origin. benign tumor, benign tumour, nonmalignant neoplasm, nonmalignant tumor, nonmalignant tumour-a tumor that is not cancerous.