immersion

Noun

• the act of wetting something by submerging it

• a form of baptism in which part or all of a person's body is submerged

• complete attention; intense mental effort

• (astronomy) the disappearance of a celestial body prior to an eclipse

• sinking until covered completely with water

Related words

• Synonyms: 
  submersion , ducking , dousing , concentration , engrossment , absorption , ingress , submergence , submerging
• Antonyms: 
  egress , emersion