The Collaborative International Dictionary
Stalactical
Stalactic \Sta*lac"tic\ (st[.a]*l[a^]k"t[i^]k), Stalactical \Sta*lac"tic*al\ (-t[i^]"kal), a. (Geol.) Stalactitic.
Wiktionary
stalactical
a. (context geology English) stalactic