'Rhotacism' definitions:
Definition of 'Rhotacism'
From: GCIDE
- Rhotacism \Rho"ta*cism\, n. [Gr. "rwtaki`zein to use the letter r ([rho]) overmuch: cf. F. rhotacisme.] An oversounding, or a misuse, of the letter r; specifically (Phylol.), the tendency, exhibited in the Indo-European languages, to change s to r, as wese to were. [1913 Webster]