Deeply plunged into a fluid, or, figuratively, into some state, occupation, etc.

In botany:

Growing wholly under water, as aquatic plants.

Originating beneath the surface of the matrix, or beneath the soil

In entomology, said of a part which is somewhat or wholly sunken in another part, as the head when it is covered by the prothorax.

past participle. Deeply plunged into anything, especially a fluid.

past participle. Deeply occupied; engrossed; entangled.

past participle. Growing wholly under water.

verb. Simple past tense and past participle of immerse.

"Fray Ignatius says he went into the Colorado and was what they call immersed; he that was baptized with holy water by the thrice holy bishop of Durango."

immersed eyes  

Hearst  Hurst  Merced  burst  coerced  

absorbed  absorbed in  awash  bathed  buried  

immerse