Speleology
ahd-5
noun.
The scientific study of caves.
noun.
Exploration of caves.
The Century Dictionary and Cyclopedia
noun.
The scientific study of caves.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
The
scientific
study of
caves
.
noun.
The
recreational
activity of
exploring
caves.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the scientific study of caves
noun.
the pastime of exploring caves