The act of immersing, or the state of being immersed; a
sinking within a fluid; a dipping; as, the immersion of Achilles in the
Styx.

Submersion in water for the purpose of Christian
baptism, as, practiced by the Baptists.

The state of being overhelmed or deeply absorbed; deep
engagedness.

The dissapearance of a celestail body, by passing either
behind another, as in the occultation of a star, or into its shadow, as
in the eclipse of a satellite; – opposed to emersion.