Ap"pulse [L. appulsus, fr. appellere, appulsum, to drive to; ad + pellere to drive: cf. F. appulse.]
A driving or running towards; approach; impulse; also, the act of striking against.
In all consonants there is an appulse of the organs.
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.
© Webster 1913.