obtundent

[Lat. obtundens, pr. par. of ob tun do to blunt.] [OBTUND.] Med.: A substance which sheathes a part or blunts irritation, usually some oily, bland, or mucilaginous matter; nearly the same as DEMUL CENT (q. v.). *ob-tu-rā-tion, s. [Lat. obturatus , pa. par. of obturo to stop up; prob. from ob- =against, and Gr. thyra a door.] The act of stopping up or closing. "Some are deaf by an outward obturation ."- Bp . Hall : Contempl.: Deaf and Dumb.