ẋ (mathematics) The differential of x, using Newtonian calculus notation; the x-component of the velocity. ẋ (upper case Ẋ, Cyrillic хь) (1992–2000) The
Appendix:Variations of "x" IPA(key): /ħ/ x̱ (upper case X̱) A letter of the Haida alphabet, written in the Latin script. x̌ in Liqʼwala dialect IPA(key): /χ/ x̱ (upper
Appendix:Variations of "x" IPA(key): /ħ/ X̱ (lower case x̱) A letter of the Haida alphabet, written in the Latin script. X̌ in Liqʼwala dialect IPA(key): /χ/ X̱ (lower