stalagmite
noun
sta·lag·mite stə-ˈlag-ˌmīt 
also ˈsta-ləg-
: a deposit of calcium carbonate like an inverted stalactite formed on the floor of a cave by the drip of calcareous water
stalagmitic
ˌsta-(ˌ)lag-ˈmi-tik
adjective stə-ˌlag-
Example Sentences
Recent Examples on the Web This year, more than 300,000 pilgrims had registered for the journey to catch a glimpse of the Amarnath shivling, a natural ice stalagmite considered a form of the god Shiva, at an altitude of nearly 4,000 meters above sea level. 
Shams Irfan, Washington Post, 9 July 2022 The markings, which date back to more than 60,000 years ago, were made on a massive stalagmite 328 feet (100 meters) into Cueva de Ardales near Málaga. Katie Hunt, CNN, 2 Aug. 2021 Start with a visit to Mono Lake, a body of water with a chemistry so complex that chalky, stalagmite-like towers of tufa rise from its bed. Shawnté Salabert, Outside Online, 22 Feb. 2021 Using the top 6 inches of an 18-inch stalagmite that researchers removed from Leviathan Cave and brought back to the lab for analysis, researchers measured the length and depth of dry periods on the land surface going back about 13,400 years. The Salt Lake Tribune, 30 Nov. 2020 During the last ice age, the spring was actually a dry cave, as proved by stalactites and stalagmites discovered well below the current water line. Dallas News, 24 Mar. 2020 During the last ice age, the spring was actually a dry cave, as proved by stalactites and stalagmites discovered well below the current water line. Dallas News, 24 Mar. 2020 So, the researchers looked at uranium-thorium isotopes in a stalagmite that had become encrusted in the woman's finger bones. Fox News, 7 Feb. 2020 Closer to home, scientists have long used cave formations to gauge rainfall, based on ratios of oxygen isotopes left in stalactites and stalagmites by seeping water. Paul Voosen, Science | AAAS, 22 Apr. 2020 See More
Shams Irfan, Washington Post, 9 July 2022 The markings, which date back to more than 60,000 years ago, were made on a massive stalagmite 328 feet (100 meters) into Cueva de Ardales near Málaga. Katie Hunt, CNN, 2 Aug. 2021 Start with a visit to Mono Lake, a body of water with a chemistry so complex that chalky, stalagmite-like towers of tufa rise from its bed. Shawnté Salabert, Outside Online, 22 Feb. 2021 Using the top 6 inches of an 18-inch stalagmite that researchers removed from Leviathan Cave and brought back to the lab for analysis, researchers measured the length and depth of dry periods on the land surface going back about 13,400 years. The Salt Lake Tribune, 30 Nov. 2020 During the last ice age, the spring was actually a dry cave, as proved by stalactites and stalagmites discovered well below the current water line. Dallas News, 24 Mar. 2020 During the last ice age, the spring was actually a dry cave, as proved by stalactites and stalagmites discovered well below the current water line. Dallas News, 24 Mar. 2020 So, the researchers looked at uranium-thorium isotopes in a stalagmite that had become encrusted in the woman's finger bones. Fox News, 7 Feb. 2020 Closer to home, scientists have long used cave formations to gauge rainfall, based on ratios of oxygen isotopes left in stalactites and stalagmites by seeping water. Paul Voosen, Science | AAAS, 22 Apr. 2020 See More Word History
Etymology
New Latin stalagmites, from Greek stalagma drop or stalagmos dripping, from stalassein to let drip
First Known Use
1681, in the meaning defined above
Kids Definition
stalagmite
noun
sta·lag·mite stə-ˈlag-ˌmīt
: a deposit like an upside down stalactite formed by the dripping of water containing minerals onto the floor of a cave