Celery seeds are the fruit of a plant related to the parsley family and are not to be confused with the plant we recognize and serve as a vegetable. They are now grown extensively in France, Holland, India, and the United States. Celery seeds are tiny and brown in color. They taste strongly of the vegetable and are aromatic and slightly bitter. ......
The dried ripe fruit of Apium graveolens (family Umbelliferae); has been used in dysmenorrhoea and as a sedative. ... (05 Mar 2000) ... 
Type: Term Pronunciation: sel′er-ē sēd Definitions: 1. The dried ripe fruit of Apium graveolens (family Umbelliferae); formerly used in dysmenorrhea and as a sedative.
[n] - seed of the celery plant used as seasoning
noun seed of the celery plant used as seasoning
Apium graveolens