Definition of stalactite noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈstæləktaɪt//
; NAmE NAmE//stəˈlæktaɪt//
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a long pointed piece of rock hanging down from the roof of a cave (= a hollow place underground), formed over a long period of time as water containing lime runs off the roof Word Originlate 17th cent.: from modern Latin stalactites, from Greek stalaktos ‘dripping’, based on stalassein ‘to drip’.
See the Oxford Advanced American Dictionary entry: stalactite