speleology
Concise Oxford English Dictionary © 2008 Oxford University Press:
speleology /ˌspiːlɪˈɒlədʒi, ˌspɛl-/
▶noun the study or exploration of caves.
– derivatives
speleological adjective,
speleologist noun.
speleological adjective,
speleologist noun.
– origin C19: from Fr. spéléologie, via L. from Gk spēlaion ‘cave’.
'speleology' also found in these Oxford entries:

