H3

H3, H03 or H-3 may refer to:

Entertainment

Science

  • Triatomic hydrogen (H3), an unstable molecule
  • Trihydrogen cation (H+3), one of the most abundant ions in the universe
  • Tritium (3H), or hydrogen-3, an isotope of hydrogen
  • ATC code H03 Thyroid therapy, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • British NVC community H3, a heath community of the British National Vegetation Classification system
  • Histamine H3 receptor, a human gene
  • Histone H3, a component of DNA higher structure in eukaryotic cells
  • Hekla 3 eruption, a huge volcanic eruption around 1000 BC

Computing

Transportation

Air and space

Automobiles

Rail

Roads

Ships

Other uses

See also