Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to Sium: Sium sisarum
Switch to new thesaurus
|Noun||1.||Sium - perennial of wet and marshy places in the northern hemisphere: water parsnips|
rosid dicot genus - a genus of dicotyledonous plants
Apiaceae, carrot family, family Apiaceae, family Umbelliferae, Umbelliferae - plants having flowers in umbels: parsley; carrot; anise; caraway; celery; dill
Sium suave, water parsnip - stout white-flowered perennial found wild in shallow fresh water; northern United States and Asia
greater water parsnip, Sium latifolium - large stout white-flowered perennial found wild in shallow fresh water; Europe