te·trox·ide 
(tĕ-trŏksīd′)
(tĕ-trŏksīd′)n.
A chemical compound containing four oxygen atoms per molecule.
- Harold Clayton
- Harold Clayton
- Harold Elliot
- Harold Eugene
- Harold George
- Harold George
- "Harold Harefoot."
- (Harold) Hart
- Harold I
- Harold II
- Harold III
- Harold III
- Harold LeClair
- Harold Rupert Leofric George Alexander.
- Harold Smith
- Harold Wallace
- Harold Walter
- Haroun al-Raschid
- Haroun al-Raschid
- harp
- harper
- Harper
- Harpers Ferry
- harpist
- harp on