a deposit, usually of calcium carbonate, shaped like an icicle, hanging from the roof of a cave or the like, and formed by the dripping of percolating calcareous water.
Origin: 1670–80; < NL stalactites < Gk stalakt(ós) dripping (stalag-, s. of stalássein to drip + -tos verbid suffix) + NL -ites-ite1
sta·lac·tite (stə-lāk'tīt', stāl'ək-) n. An icicle-shaped mineral deposit, usually calcite or aragonite, hanging from the roof of a cavern, formed from the dripping of mineral-rich water.
[New Latin stalactītēs, from Greek stalaktos, dripping, from stalassein, stalak-, to drip.] sta·lac'ti·form' adj., stal'ac·tit'ic (stāl'āk-tĭt'ĭk, stə-lāk'-) adj.
1677, Anglicized from Mod.L. stalactites (used 1654 by Olaus Wormius), from Gk. stalaktos "dripping," from stalassein "to trickle," from PIE base *stag- "to seep, drip, drop" (cf. Ger. stallen, Lith. telziu "to urinate").