Variety of garden celery Apium graveolens var. rapaceum of the carrot family Umbelliferae, with an edible, turniplike root and small, bitter stems.1. Grown for its thickened edible aromatic root; SYN. celery root, knob celery, root celery, turnip-rooted celery, Apium graveolens rapaceum.
2. Thickened edible aromatic root of a variety of celery plant; SYN. celery root.