> ǁ ur- /ʊər/, prefix, repr. G. (also MHG., OHG.) ur-, denoting ‘primitive, original, earliest,’ as ur-Hamlet, -origin, -stock, etc. See also Urheimat, Urschleim, Ursprache, Urtext.
G. ursprache (= primitive language) has been freq. used in recent English philological works.
1864 Max Müller Lect. Sci. Lang. (1871) II. 133 ― The most troublesome of all vowels, the neutral vowel, sometimes called Urvocal, better Unvocal.
1889 Jacobs Caxton’s Aesop I. 37 ― Any light he can throw on the Ur-origin of the Fables.