1. Any of the chemically inert gaseous elements of the helium group in the periodic table
   - noble gas, inert gas

Type of: chemical element, element, gas

• genus Geophilus
• genus Geothlypis
• genus Geranium
• genus Gerardia
• genus Gerbera
• genus Gerbillus
• genus Gerea
• genus Gerres
• genus Gerrhonotus
• genus Gerris
• genus Gesneria
• genus Geum
• genus Giardia
• genus Ginglymostoma
• genus Ginkgo
• genus Giraffa
• genus Gladiolus
• genus Glareola
• genus Glaucium
• genus Glaucomys
• genus Glaux
• genus Glechoma
• genus Gleditsia
• genus Gleichenia
• genus Gliricidia