Definition. 1  A lumpectomy is a type of surgery used to treat breast cancer. It is considered breast-conserving surgery because in a lumpectomy, only the malignant tumor and a surrounding margin of normal breast tissue are removed. 2  Lumpectomy is a surgical treatment for newly diagnosed breast cancer. It is estimated that at least 50% of women with breast cancer are good candidates for this procedure. The location, size, and type of tumor are of primary importance when considering breast cancer surgery options.
A triadic melody is a melody made up of triads. Triads are chordsconsisting of three tones. The triad consists of the root tone, amajor or minor.
(redirected from Virchow's triad) Also found in: Dictionary, Thesaurus, Medical, Wikipedia. Related to Virchow's triad: Deep vein thrombosis, Whipple's triad, Charcot's triad, Cushing's triad. 1. Chem an atom, element, group, or ion that has a valency of three. 2. Music a three-note chord consisting of a note and the third and fifth above it. 3. an aphoristic literary form used in medieval Welsh and Irish literature.