transcription, транскрипция: [ ˈpī-ˌän ]
noun
Etymology: contraction of pi-meson
Date: 1950
: a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron
• pi·on·ic pī-ˈä-nik adjective