tr.v. rho·ta·cized, rho·ta·ciz·ing, rho·ta·ciz·es
1. To cause to undergo rhotacism as part of historical change.
2. To articulate (a sound such as (s) or (z)) as (r).
3. To articulate (a vowel or other speech sound) with characteristics of the sound (r), such as with retroflexion of the tongue or with the center of the tongue raised and back of the tongue concave.
[From Greek rhōtakizein, to make excessive or erroneous use of the letter rho; see rhotacism.]
rho′ta·ci·za′tion (-zā′shən) n.
(Linguistics) phonetics to pronounce an r sound excessively or change to an r sound