neutrino

As a noun neutrino

is neutrino.

As an adjective undefined is

lacking a definition or value.

is likely misspelled.

has no English definition.

As a noun neutrino

is 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.

As nouns the difference between photon and neutrino

is that photon is the quantum of light and other electromagnetic energy, regarded as a discrete particle having zero rest mass, no electric charge, and an indefinitely long lifetime. It is a gauge boson while neutrino is 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.

As nouns the difference between positron and neutrino

is that positron is the antimatter equivalent of an electron, having the same mass but a positive charge while neutrino is 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.

As nouns the difference between neutron and neutrino

is that neutron is neutron while neutrino is neutrino.

As nouns the difference between taxonomy and neutrino

is that taxonomy is the science or the technique used to make a classification while neutrino is neutrino.

As a noun neutrino

is 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.

As an adjective neutrinophilic is

having an affinity with neutrinos.

As nouns the difference between neutrino and geoneutrino

is that neutrino is neutrino while geoneutrino is (physics) a neutrino produced by radioactive decay within the earth.

As nouns the difference between neutrino and neutrinosphere

is that neutrino is neutrino while neutrinosphere is (astronomy) the region of a star or supernova rich in neutrinos.

As a noun neutrino

is neutrino.

As an adjective semileptonic is

(physics) of or pertaining to the decay of a hadron through the weak nuclear force in which one lepton (and the corresponding neutrino) is produced in addition to one or more hadrons.