beta-naphthyl group

[bey-tuh-naf-thil, -nap- or, esp. British, bee-]
Also called beta-naphthyl radical.

naphthyl group

noun Chemistry.
  1. Also called alpha-naphthyl group, alpha-naphthyl radical. the univalent group C10H7–, 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 C10H7–, having a replaceable hydrogen atom in the second, or beta, position; 2-naphthyl group.
Also called naphthyl radical.
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