ouabain

American  

[wah-bah-in] / wɑˈbɑ ɪn /

noun

Pharmacology.

1. a glycoside occurring as a white, crystalline powder, C 2 9 H 4 4 O 1 2 , obtained from the seeds of a shrub, Strophanthus gratus, or from the wood of trees of the genus Acokanthera, and used in medicine chiefly as a cardiac stimulant.

---

ouabain British  

/ ˈwɑːbɑːɪn /

noun

1. a poisonous white crystalline glycoside extracted from certain trees and used as a heart stimulant and, by some African tribes, on poison darts. Formula: C 29 H 44 O 12 .8H 2 O

---

Etymology

Origin of ouabain

1890–95; < French ouaba ( ïo ) (< Somali waabayyo arrow poison) + -in ²

Example Sentences

The binding of Na+ occurs on the inner surface of the cell as its transportation remains unaffected by the presence of ouabain.

From Textbooks • Jun. 9, 2022

The binding of Na+ occurs on the outer surface of the cell, as its transportation remains unaffected by the presence of ouabain.

From Textbooks • Jun. 9, 2022

His team then transplanted ONPs into the ears of gerbils that had been treated with ouabain, a chemical that damages auditory nerves, but not hair cells.

From Scientific American • Sep. 13, 2012