colliculus
Concise Oxford English Dictionary © 2008 Oxford University Press:
colliculus /kəˈlɪkjʊləs/
▶noun (pl. colliculi /-lʌɪ, -liː/) Anatomy any of a number of small swellings in the roof of the midbrain, involved in vision and hearing.
– derivatives
collicular adjective.
collicular adjective.
– origin C19: from L., dimin. of collis ‘hill’.
'colliculus' also found in these Oxford entries:

