Meaning of hexamethonium

hex•a•me•tho•ni•um

Pronunciation: (hek"su-mu-thō'nē-um), [key]
— n. Pharm.
  1. a compound, CHN, used in the treatment of severe hypertension to lower blood pressure and increase blood flow by blocking transmission of nerve impulses that constrict blood vessels.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.