2. Submersion in water for the purpose of Christian baptism,
as, practiced by the Baptists.
3. The state of being overhelmed or deeply absorbed; deep
engagedness.
Too deep an immersion in the affairs of life.
--Atterbury.
4. (Astron.) 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}.
{Immersion lens}, a microscopic objective of short focal
distance designed to work with a drop of liquid, as oil,
between the front lens and the slide, so that this lens is
practically immersed.