prótínum
Prótínum is a rarely used transliteration that appears in some philological and historical texts as a renderings of the Greek term πρωτόνιον, which in standard usage denotes the subatomic particle known in English as the proton. In contemporary science, the particle is universally called the proton, and Greek-language references typically render it as πρωτόνιον with Greek orthography rather than prótínum.
Etymology and usage: The form prótínum, with accents to indicate stress, is found only in a small
In physics, the proton is a positively charged baryon located in atomic nuclei, with a rest mass
Usage and note: Today, prótínum is not common in scientific writing and is mainly encountered in glossaries,
See also: Proton; Protium; Greek scientific terminology; Etymology.