The name Tanka is of English origin. The meaning of Tanka is gracious. Tanka is generally used as a girl's name. It consists of 5 letters and 2 syllables and is pronounced Tan-ka.
Webster Dictionary(5.00 / 1 vote)Rate this definition: Freebase(0.00 / 0 votes)Rate this definition: Scheme is a functional programming language and one of the two main dialects of the programming language Lisp. Unlike Common Lisp, the other main dialect, Scheme follows a minimalist design philosophy specifying a small standard core with powerful tools for language extension.
Optics. 1  the variation of the index of refraction of a transparent substance, as glass, with the wavelength of light, with the index of refraction increasing as the wavelength decreases. 2  the separation of white or compound light into its respective colors, as in the formation of a spectrum by a prism.