What is "protium"

n. 1 (context isotope English) The lightest and most common isotope of hydrogen, having a single proton and no neutron - (nuclide 1 1 H) 2 An atom of this isotope.

Protium may refer to:

• In physics and chemistry, protium refers to hydrogen-1, the most common isotope of the element hydrogen, with one proton and no neutrons. It is the most stable isotopic form of hydrogen. At normal condition it exists about 99.985% in nature.
• Protium (plant) refers to a genus of chiefly tropical American trees in the family Burseraceae, having fragrant wood
• Protium (computer language) is a universal, symbolic programming language system
• In medicine, Protium is a commercial name for pantoprazole, a so-called "proton inhibitor" drug

Protium is a genus of more than 140 species of flowering plants in the family Burseraceae. It is native to the Neotropics (where more than 100 species occur), Madagascar, New Guinea, and southern Asia from Pakistan east to Vietnam. The genus was for some time included in Bursera, but is distinct, being most closely related to Crepidospermum and Tetragastris.

The species are usually small or medium-sized trees, but some can be large, up to tall. In their native range, some species are grown for timber, used as firewood, as medicinal plants, for their fruit, or in other cultural contexts.