What does stalagmite mean?
A stalagmite is a cave formation made by the slow accumulation of minerals deposited by dripping water. As water containing dissolved calcium carbonate falls onto a cave floor, it leaves behind tiny deposits of calcite that gradually build upward into narrow spikes, rounded mounds, columns, or other distinctive shapes. Stalagmites are especially common in limestone caves and can take thousands of years to develop. They are often confused with stalactites, but the distinction is simple: stalagmites rise from the floor, while stalactites descend from the ceiling. Sometimes the two formations meet and form a continuous column, known as a pillar. The word is useful in geology, geography, travel writing, and descriptions of natural underground landscapes.
nounA stalagmite is a deposit of mineral matter, usually calcite, formed by dripping water on the floor of a cave or beneath a rock or overhang. It grows upward from the ground as mineral-rich water gradually deposits its dissolved contents.
- A mineral deposit formed by dripping water on the floor of a cave or beneath a rock or overhang, typically composed of calcite.
"The cavern was filled with towering stalagmites that rose from the cave floor like stone columns."
"A trail of small stalagmites marked the edge of the underground path."
"The guide pointed out a rare formation called a soda-straw stalagmite, a very thin hollow tube."
The standard plural adds -s.
"The visitors admired the stalagmites in the illuminated cavern."
A stalagmite grows upward from the floor, while its partner, the stalactite, grows downward from the ceiling; sometimes the two meet to form a column.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does stalagmite come from?
The word comes from Greek stalagmos, meaning “a dripping” or “dripping,” and is related to stalassein, “to drip.” Stalagmite was introduced into English in the 17th century through scientific descriptions of mineral formations in caves. Its counterpart, stalactite, was formed from the same Greek root and refers to the related ceiling-hanging formation.
Related word forms
How stalagmite is actually used
The term is primarily used in geology, speleology, and descriptions of caves. In general writing, “stalagmite” specifically refers to the upward-growing formation, although “dripstone” can refer more broadly to both stalagmites and stalactites.
Easily confused with stalagmite
A stalagmite grows upward from the floor of a cave, whereas a stalactite hangs downward from its roof or ceiling.