celeriac

[suh-ler-ee-ak, -leer-] /səˈlɛr iˌæk, -ˈlɪər-/
noun
1.
a variety of celery, Apium graveolens rapaceum, of the parsley family, having a large, edible, turniplike root.
Also called celery root, knob celery, turnip-rooted celery.
Origin
1735-45; celery + -ac
Examples from the web for celeriac
  • Among plants that contain high amounts of linoleic acid are several tuberous plants such as carrot, radish, and celeriac.
British Dictionary definitions for celeriac

celeriac

/sɪˈlɛrɪˌæk/
noun
1.
a variety of celery, Apium graveolens rapaceum, with a large turnip-like root, used as a vegetable
Word Origin
C18: from celery + -ac, of unexplained origin