v. [f. L. assibilāt- ppl. stem of ads-, assībilāre, f. ad to + sībilāre to hiss. Cf. F. assibiler.] To give a sibilant or hissing sound to.
1844. J. W. Donaldson, Varron., 218. Two different values of the Greek z, which was a dental, either assibilated (as σδ), or softened (as δς).
1861. Proc. Amer. Phil. Soc., VIII. 361. The second step consists in y being assibilated in sh.
