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. ]
a. [ L. emersus, p. p. See Emerge. ] (Bot.) Standing out of, or rising above, water. Gray. [ 1913 Webster ]
n. [ Cf. F. émersion. See Emerge. ]
Their immersion into water and their emersion out of the same. Knatchbull. [ 1913 Webster ]