STALAGMITE

stalagmite

(noun) a cylinder of calcium carbonate projecting upward from the floor of a limestone cave

Source: WordNet® 3.1

Etymology

Noun

stalagmite (plural stalagmites)

(geology) A secondary mineral deposit of calcium carbonate or other mineral, in shapes similar to icicles, that lie on the ground of a cave.

Source: Wiktionary

Sta*lag"mite, n. Etym: [Gr. stalagmite.] (Geol.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition