SUBMERSION
submersion, immersion, ducking, dousing
(noun) the act of wetting something by submerging it
submergence, submerging, submersion, immersion
(noun) sinking until covered completely with water
Source: WordNet® 3.1
Etymology
Noun
submersion (countable and uncountable, plural submersions)
The act of submerging, or the state of being submerged; immersion
(mathematics) A differentiable map whose differential is everywhere surjective.
Source: Wiktionary
Sub*mer"sion, n. Etym: [L. submersio: cf. F. submersion.]
1. The act of submerging, or putting under water or other fluid, or
of causing to be overflowed; the act of plunging under water, or of
drowning.
2. The state of being put under water or other fluid, or of being
overflowed or drowned.
Source: Webster’s Unabridged Dictionary 1913 Edition