To involve or engage deeply.
To place within a fluid (generally a liquid, but also a gas).
Archimedes determined the volume of objects by immersing them in water.
To map into an immersion.
To cause or engage (someone or something) to participate or to become connected or implicated.
To take in; to gather in; to mingle, blend or merge.
To comprise or include; to have as a related part.
To complicate or make intricate.
To envelop, enfold, entangle.