bathyscaphe
Concise Oxford English Dictionary © 2008 Oxford University Press:
bathyscaphe /ˈbaθɪskaf/
▶noun chiefly historical a type of manned submersible vessel.
– origin 1940s: coined in Fr. from Gk bathus ‘deep’ + skaphos ‘ship’.
'bathyscaphe' also found in these Oxford entries:

