Water 101 > Glossary Glossary See also Water 101 Acronyms & Units A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | ZKarst - An area of irregular limestone in which erosion has produced fissures, sinkholes, underground streams, and caverns. See also Acronyms & Units, Water 101