1. completely involved in or focused on an activity or subject
2. placed completely under water or another liquid

Examples

• She was completely immersed in her book and didn’t hear the phone ring.
• The students became immersed in the science experiment.
• He was so immersed in his work that he forgot to eat lunch.
• The ancient artifacts were found immersed in mud at the bottom of the lake.
• The vegetables should be immersed in boiling water for three minutes.
• After being immersed in the language program, her Spanish improved dramatically.
• The submarine remained immersed for several hours during the mission.