upsilon

• ypsilon (uncommon)

From Ancient Greek ὖ ψιλόν (û psilón, “simple Υ”).

• (UK) IPA^(key): /ˈ(j)uːpsɪˌlɒn/, /ˈ(j)ʊpsɪˌlɒn/, /ˈʌpsɪˌlɒn/, /(j)uːpˈsaɪlən/, /(j)ʊpˈsaɪlən/, /əpˈsaɪlən/
• (US) IPA^(key): /ˈ(j)upsɪˌlɑn/, /ˈ(j)ʊpsɪˌlɑn/, /ˈʌpsɪˌlɑn/
• (Canada) IPA^(key): /ˈ(j)upsɪˌlɒn/, /(j)ɪu̯psɪˌlɒn/

• Audio (US):

  (file)

upsilon (plural upsilons or upsila)

1. The twentieth letter of Classical and Modern Greek; the twenty-second letter of Old and Ancient Greek.
2. (particle physics) An upsilon meson, or bottomonium.

• (Greek-script letter names) alpha, beta, gamma, delta, epsilon, zeta, eta, theta, iota, kappa, lambda, mu, nu, xi, omicron, pi, rho, sigma, tau, upsilon, phi, chi, psi, omega

• Poulins, pulsion, unspoil

upsilon m or f (plural upsilons, diminutive upsilonnetje n)

1. superseded spelling of ypsilon

From Ancient Greek ὖ ψιλόν (û psilón).

• IPA^(key): /yp.si.lɔ̃/, /yp.si.lɔn/

upsilon m (invariable)

1. upsilon (Greek letter)

   Synonym: i grec

• “upsilon”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

• pulsion