(astronomy) the disappearance of a celestial body prior to an eclipse
<noun.event>
complete attention; intense mental effort
<noun.cognition>
a form of baptism in which part or all of a person's body is submerged
<noun.act>
the act of wetting something by submerging it
<noun.act>
Immersion \Im*mer"sion\, n. [L. immersio; cf. F. immersion.] 1. 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.
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.
Pauline A. Howes, a spokeswoman for RJR Nabisco in Atlanta, said, "For the time being, he's up to his eyeballs in RJR Nabisco immersion.
The Tower Commission made similar points about how the Boland amendments and the immersion of foreign policy in trivial legalities contributed to Iran-Contra.
But it was a fitting part of two weeks of total immersion in a world devoted to paper.
This is not the way Mr. Gay, the historian, wrote before he chose to accept baptism by immersion in the mind-numbing waters of a psychoanalytic institute.
A particularly fine opportunity for full immersion in a masterpiece of the Korean past awaits anyone who can manage to visit the galleries of the Asia Society here at 725 Park Avenue before the end of July.
In some parts of the country, parents line up to enroll their children in immersion programs.
Schmeltzer estimated there are about 80 million hair dryers still in the hands of consumers that do not employ the new immersion protection technology.
"The immersion approach does not work and cannot work," he said. "It forces children to communicate far beyond what they know.
They are surrounded by 25 other children who speak French as badly as they do." Hammerly cited a study indicating that 52 percent of simple sentences written by immersion students had one or more errors in grammar or vocabulary.
Prolonged immersion in this ultimately hallucinatory world erodes the reality principle.