1. An oxide containing four atoms of oxygen in the molecule

Derived forms: tetroxides

Type of: oxide

• Helene
• Helenium
• Helenium autumnale
• Helenium hoopesii
• Helenium puberulum
• Heleodytes
• heli-
• heliac
• heliacal
• Heliamphora
• helianthemum
• Helianthemum canadense
• Helianthemum scoparium
• helianthus
• Helianthus angustifolius
• Helianthus annuus
• Helianthus giganteus
• Helianthus laetiflorus
• Helianthus maximilianii
• Helianthus petiolaris
• Helianthus tuberosus
• helical
• Helichrysum
• Helichrysum bracteatum
• Helichrysum secundiflorum