\Ap"pulse\ (?; 277), n. [L. appulsus, fr. appellere,
appulsum, to drive to; ad + pellere to drive: cf. F.
appulse.]
1. A driving or running towards; approach; impulse; also, the
   act of striking against.
         In all consonants there is an appulse of the organs.
                                               --Holder.
2. (Astron.) The near approach of one heavenly body to
   another, or to the meridian; a coming into conjunction;
   as, the appulse of the moon to a star, or of a star to the
   meridian.