tholeiite
Concise Oxford English Dictionary © 2008 Oxford University Press:
tholeiite /ˈθəʊlɪʌɪt/
▶noun Geology a silica-rich basaltic rock containing augite and pyroxene.
– derivatives
tholeiitic /ˌθəʊlɪˈɪtɪk/ adjective.
tholeiitic /ˌθəʊlɪˈɪtɪk/ adjective.
'tholeiite' also found in these Oxford entries:

