ẍ

ẍ

1. (mathematics) The second-order differential of x, using Newtonian calculus notation; the x-component of the acceleration.

• x̄

• IPA^(key): /ʃ/

ẍ (upper case Ẍ)

1. A historical letter of the Asturian alphabet.
   • 1869, Juan Junquera Huergo, Gramática Asturiana‎:

     Entonces el abecedario asturiano constaría de 24 letras, cuyos caracteres y nombres serían los siguientes: Aa, Bb, Cc, Ch ch, Dd, Ee, Ff, Gg, Ii, Ll, Ll ll, Mm, Nn, Ññ, Oo, Pp, Rr, R̄r̄, Ss, Tt, Uu, X̄, x̄, Yy, Zz

     Then, the Asturian alphabet would consist of 24 letters, whose characters and names would be the following:Aa, Bb, Cc, Ch ch, Dd, Ee, Ff, Gg, Ii, Ll, Ll ll, Mm, Nn, Ññ, Oo, Pp, Rr, R̄r̄, Ss, Tt, Uu, X̄, x̄, Yy, Zz

• This letter was used historically by various authors (especially before the late 19th century), in order to distinguish "x" (/ks/), but it is no longer used. It's not commonly used in re-editions of old Asturian literature that originally used it.

• xh

• IPA^(key): /ʃ/

ẍ (upper case Ẍ)

1. A letter of the Mam alphabet.

• IPA^(key): /ɣ/

• Audio (Turkey, Bitlis):

  (file)

ẍ (upper case Ẍ)

1. Used to distinguish غ (ḡ) from خ (ḵ) in Arabic loan words.

• (Latin-script letters) A a, B b, C c, Ç ç, D d, E e, Ê ê, F f, G g, H h (Ḧ ḧ), I i, Πî, J j, K k, L l, M m, N n, O o, P p, Q q, R r, S s, Ş ş, T t, U u, Û û, V v, W w, X x (Ẍ ẍ), Y y, Z z