ornitho-, ornith-, -ornithic, -ornithes, -ornithoid, -ornis, ornis-

(Greek: bird, birds)

ornithocoprophily
ornithocopros
Bird dung.
ornithodelph
ornithogenic
ornithoid
ornitholite
ornithological
ornithologist (s) (noun), ornithologists (pl)
A person who is versed in the scientific study of the members of the class of Aves, including warblers, eagles, jays, owls, wildfowl, doves, etc.: The National Audubon Society, founded in 1905, has been focusing on wildlife throughout the years; especially, birds and it was named after the ornithologist, John James Audubon.
A person who specializes in studying birds.
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ornithology (s) (noun) (usually no plural)
A field in zoology which examines bird behaviors, classifications, environments, etc.: As a student in high school, Iris loved biology, especially when she learned more about the warblers in her area; so, she decided to join the National Audubon Society and to study ornithology at the university.
A person who specializes in studying birds.
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Go to this Word A Day Revisited Index
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ornithomancy (s) (noun) (no pl)
Divination by means of birds: Ornithomancy included birds' flights and songs, however any action of the bird could have been interpreted as a method of foreseeing or foretelling, or could have been interpreted as a message from the gods.

ornithomania
An excessive fascination with birds.
ornithomantist
Ornithomimus (s) Ornithomimids (pl) (nouns)
A thirteen to fifteen-foot-long (4 to 4.6-meter) omnivorous theropod dinosaur from the Late Cretaceous Period that had large hips, a long tail, and strong hind limbs: "Ornithomimus has been discovered in several places in the western United States and Canada."

"Ornithomimids looked very much like modern ostriches (except for their long tails); and, although their heads were small, they had large brain areas which probably were dedicated to kinesthetic (movement) coordination, according to some paleontologists."

—Compiled from information located at
DinoDictiomary.com, "Dinosaurs from A-Z"
and Wikipedia, "Ornithomimus".
ornithon
ornithophily (s) (noun) (no pl)
The pollination by birds: Flowering plants that are fertilized by birds is called ornithophily.