Definition of naphthaleneacetic acid
: either of two crystalline naphthyl derivatives C10H7CH2COOH of acetic acid; especially : the alpha or 1-compound used as a growth regulator for plants (as for preventing drop of apples before normal harvest time)
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of naphthaleneacetic acid
naphthalene + acetic
Seen and Heard
What made you want to look up naphthaleneacetic acid? Please tell us where you read or heard it (including the quote, if possible).