But immersion in this realm of secrets and deception comes at a steep price, for both the protagonist and reader.
If they swam just as strenuously on the tenth immersion as on the first, the risk of drowning would increase dramatically.
Hanging with Rob Lowe on the set of a political film is an immersion in the tricks of the trade.
mid-15c., from Late Latin immersionem (nominative immersio), noun of action from past participle stem of immergere, from assimilated form of in- "into, in, on, upon" (see in- (2)) + Latin mergere "plunge, dip" (see merge). Meaning "absorption in some interest or situation" is from 1640s. As a method of teaching a foreign language, it is from 1965, trademarked by the Berlitz company.
immersion im·mer·sion (ĭ-mûr'zhən, -shən)
The placing of a body under water or other liquid.
The use of a fluid on a microscope slide in order to exclude air from between the glass slide and the bottom lens.