immersion (n.)

• absorption
• affusion
• application
• aspersion
• baptism
• baptistery
• bath
• bathing
• burial
• christening
• concentration
• contemplation
• dampening
• deluge
• dip
• dipping
• dousing
• duck
• ducking
• engagement
• engrossment
• flooding
• font
• infusion
• intentness
• inundation
• involvement
• irrigation
• meditation
• moistening
• monomania
• obsession
• preoccupation
• rinsing
• single-mindedness
• sinking
• souse
• sousing
• spattering
• splashing
• splattering
• spraying
• sprinkling
• studiousness
• study
• submergence
• submersion
• watering
• wetting