noun
any of the absorption lines or bands added to the spectrum of a heavenly body by various substances in the earth's atmosphere
the telluric lines of nitrogen, oxygen, water vapor
noun
any of the absorption lines or bands added to the spectrum of a heavenly body by various substances in the earth's atmosphere
the telluric lines of nitrogen, oxygen, water vapor
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012