Definitions

1. noun

the branch of biology dealing with eggs, particularly those of birds.

“The study of bird eggs is a fascinating field of oology.”

2. noun

a particular area of study or expertise, especially a field of scientific study.

“Her oology of ancient civilizations is impressive.”

3. noun

the study of eggs or egg-laying animals, especially birds.

“The book is a comprehensive guide to oology and ornithology.”