Definitions

1. noun

A compound found in the bark of certain trees, especially the black wattle, which has astringent properties.

“The researchers studied the astringent properties of acetyltannin in the bark of the black wattle tree.”

2. noun

A compound found in the bark of certain trees, especially the black wattle, which is used as a tanning agent.

“The tannery used acetyltannin to tan the leather for the new handbags.”