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Meaning of atmophile

at•mo•phile

Pronunciation: (at'mu-fīl"), [key]
— Geol. Geol.
—adj.
  1. (of a chemical element in the earth) having an affinity for the atmosphere, as neon or helium.
—n.
  1. an atmophile element.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.