- ragweed (n.)
- 1790, from ragged + weed (n.); so called from shape of the leaves. Applied to a different plant (ragwort) from 1650s.
- 1. Limit your outside activities if you are bothered by ragweed and mold.
- 2. Patients who demonstrated to severe rhinitis symptoms upon exposure to ragweed were admitted to the study.
- 3. TOLAMBA is designed to target the underlying cause of seasonal allergic rhinitis caused by ragweed.
[ ragweed 造句 ]