Dictionary
naph'thyl group"
Chem.
1. Also called
alpha-naphthyl group, alpha-naphthyl radical. the univalent group C
10H
7–, having a replaceable hydrogen atom in the first, or alpha, position; 1-naphthyl group.
2. Also called
beta-naphthyl group, beta-naphthyl radical. the univalent group C
10H
7–, having a replaceable hydrogen atom in the second, or beta, position; 2-naphthyl group. Also called
naph'thyl rad"ical. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.