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The branch of zoology that deals with eggs, especially birds' eggs.

o′o·log′ic (ō′ə-lŏj′ĭk), o′o·log′i·cal (-ĭ-kəl) adj.
o′o·log′i·cal·ly adv.
o·ol′o·gist n.
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References in periodicals archive ?
It was bought from an Italian museum in the 19th century by oologist (egg collector) Robert Champley, who found it covered in dirt.
An oologist is a collector of bird's eggs and not the ones you dip your soldiers into.
He held two college degrees (from Penn State), was a world-class oologist (collector of birds' eggs), called his players "dear boys," and was a sensitive observer of the human condition.