an electron neutrino

a neutrino

a seed / a pit or stone in a fruit / a gamete (reproductive cell such as a spermatozoan or egg) / a lineage, bloodline / an origin, cause / the materials or ingredients from which something is made

(physics) an elementary particle

new

Turin

electron / (attributive) the quality of being electronic

(attributive) the state of being new

nu (name for the letter of the Greek alphabet: Ν and ν)

(informal, dated) new