You searched for: “submersion
submersion (suhb MUHR zhuhn, suhb MUHR shuhn) (s) (noun), submersions (pl)
1. The condition of something being completely covered with a liquid: For cleaning purposes, a submersion, or lowering one part of the machine into a special solution, was necessary.
2. The state of being overwhelmed with activities, work, difficulties, etc.: Sam was confronted with a monstrous job of taking care of the finances of the company because the treasurer suddenly got sick and this submersion of responsibilities caused him to have many sleepless nights.