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Coined by Italian physicist Enrico Fermi in 1933 from neutron + the Italian diminutive suffix -ino; by surface analysis, neutr(o)- + -ino.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: An elementary particle that is classified as a lepton, and has an extremely small but nonzero mass and no electric charge. It interacts with the surroundings only via the weak force or gravitation, making it very difficult to detect. Full definition →
Coined by Italian physicist Enrico Fermi in 1933 from neutron + the Italian diminutive suffix -ino; by surface analysis, neutr(o)- + -ino.
Etymology from Wiktionary, CC BY-SA 4.0.