| Answer | Crossword Clue |
|---|---|
| ocelli | OCELLUS, a minute simple eye |
| ocellus | a minute simple eye |
| ocellus | a minute simple eye or eyespot of an invertebrate |
| ocellar | a minute simple eye or eyespot of an invertebrate |
| animalcule | a minute or microscopic animal, quite invisible to the naked eye. |
| animalcule | a minute animal, nearly or quite invisible to the naked eye. |
