v. t. [ L. demersus, p. p. of demergere. See Merge. ] To immerse. [ Obs. ] Boyle. [ 1913 Webster ]

a. (Bot.) Situated or growing under water, as leaves; submersed. [ 1913 Webster ]

pos>n. [ L. demersio. ] 1. The act of plunging into a fluid; a drowning. [ 1913 Webster ]

2. The state of being overwhelmed in water, or as if in water. Ray. [ 1913 Webster ]