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Zoology
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Alphabetical index
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Ocellus
An ocellus is the simple eye of adult insects (and some ...
Ocular circle
An ocular circle is a thick ring, coloured or white, ...
Odontocetes
Odontocetes, or literally toothed whales, form, together ...
Offspring
Offspring are the young of birds.
Ookinete
Ookinetes represent one of the stages of the reproductive ...
Oophagy
Oophagy is the term for a diet of eggs. Some snakes are ...
Ophidian
Ophidians are snakes.
Order
An order is a taxonomic group superior to the family but ...
Ornithologist
An ornithologist is a specialist in ornithology.
Ornithology
Ornithology is the science of birds.
Oviduct
An oviduct is a passageway that eggs travel through when ...
Ovigerous
Something that is ovigerous carries eggs.
Oviparous
An oviparous species reproduces through eggs. The hatching ...
Ovipositor
An ovipositor is a 'bridge organ', extended into a point, ...