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Related Terms:
Noun
Definition: A substance (especially a drug) that is phlebotonic; a drug that modifies the tone of vein walls to treat venous insufficiency causing venous ulcers, hemorrhoids, or varicose veins.
Adjective
Definition: Affecting the tone of veins; that is, affecting the muscle tone of the smooth muscle in the walls of veins, thus influencing blood flow within the lumen.