stalagmite, n. [Gr. sta`lagma that which drops, a drop, fr. stala`zein to drop: cf. F. stalagmite.].
A deposit more or less resembling an inverted stalactite, formed by calcareous water dropping on the floors of caverns; hence, a similar deposit of other material. [1913 Webster]
stalagmite, n. a deposit of calcium carbonate formed by the dripping of water into the shape of a large inverted icicle rising from the floor of a cave etc., often uniting with a stalactite.
Derivative
stalagmitic adj.
Etymology
mod.L stalagmites f. Gk stalagma a drop f. stalasso (as STALACTITE)