appulse

Appulse, ap-puls′, n. a striking against: the approach of a planet to a conjunction with the sun or a star.

Every appulse of life against matter means an added push in the direction of spiritualization.

May not the effect be mechanical, the appulse of the air separating the flame from the wick.

The next approximate appulse of the two bodies will occur in 1985, when the form of the comet's orbit may be sensibly modified.

The appulse or near approach is but one of the methods by which the spiral nebul may have come into existence.