Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From scientific Latin ocellatusocellate + -ion; compare -ation.
Definition of ocellation in US English:
ocellation
nounˌɒsɪˈleɪʃn
Zoology rare
A marking resembling an eye; an eyespot.
Origin
Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From scientific Latin ocellatus ocellate + -ion; compare -ation.