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adj. Of or pertaining to collisions (especially between particles)

Relating to or of the nature of a collision.

Colliding: as, a collisional distance; collisional particles.

"So it is not physically impossible to re-emit at the same frequency, it is indeed physically perfectly normal to do so, but in different conditions other mechanisms such as collisional de-excitation will interupt the re-emission at that same frequency."

Provisional    divisional    provisional   

masturbatory    iphone...the    masturbatic    vesical    self-fulfilling