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. (Science: astronomy) 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.
Origin: L. Appulsus, fr. Appellere, appulsum, to drive to; ad _ pellere to drive: cf. F. Appulse.