Word Study
celeriac
CIDE DICTIONARY
celeriac, n.
Turnip-rooted celery, a from of celery with a large globular root, which is used for food. [1913 Webster]
OXFORD DICTIONARY
celeriac, n. a variety of celery with a swollen turnip-like stem-base used as a vegetable.
Etymology
CELERY: -ac is unexplained
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