0 a person who does not eat meat, fish, or dairy products (= milk or foods made from milk) but does eat eggs:
Some people are ovo-vegetarians because they are lactose-intolerant.
1 not eating or including meat, fish, or dairy products (= milk or foods made from milk), but including eggs:
An ovo-vegetarian diet is easy to follow, without any health problems.
If you’re an ovo-vegetarian, proper menu planning is important to ensure you consume adequate amounts of high-quality, complete proteins.
The ovo-vegetarian consumes no meats, fish or dairy products but nevertheless does eat eggs.
Is anyone here an ovo-vegetarian?
