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Veterinary Dictionary Starting with O

obesity

A medical condition in which an animal possesses an abnormally large amount of fat in the body

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obligate aerobe

A type of organism that only has the ability to live in a free oxygen environment

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obligate anaerobe

An organism that only has the ability to live in an environment free of free oxygen

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Obligate carnivore

An animal that requires in its diet nutrients that are found in sufficient quantities only in meat or other animal products.

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obligate parasite

A type of parasite that must be confined to a certain type of host and can only survive as a parasite

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obligate saprophytes

A type of micro organism that gets its nutrients from dead tissue and inorganic materials

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obligate symbiotic

A type of organism that depends on another organism to exist

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oblique projection

A beam that passes through the body at a certain angle

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Obsessive compulsive

A behavioral condition in which a pet repeatedly performs an action out of context. It is thought that the behavior is an expression of stress, frustration and/or conflict. Certain breeds are more pro...

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obstetrical chain

A type of chain used by a vet to help animals to deliver their young; used with cows and horses and helps to provide enough traction for the young.

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obstetrics

The form of medicine that handles the birthing of young and the care of the mother during pregnancy

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obstruction

The blockage of a passage or canal

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occlusal surface

The surface of a tooth designed for chewing

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occlusion

The type of contact that occurs between the teeth where chewing is concerned

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Occult

Indicating a disease or condition that is clinically not apparent.

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occults spavin

A form of bone spavin that occurs at the hock in a horse

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Ocular

Relating to the eye. 

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odontomata

A type of tumor that forms in tissue before teeth are formed

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Off label

Term used to describe the use of a medication for a condition for which it was not FDA approved. A large number of medications used in veterinary medicine are used 'off label.' If veterinarians only u...

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Offal

Animal organs rejected at slaughter as unfit for human consumption, e.g., spleen, intestine, brain, lungs.

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off-side

The right side as pertaining to a horse

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offspring

The term for an animal's young

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oil gland

A type of gland found at the base of a chicken's tail that secretes a type of oil used in preening

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ointment

Salve; usually made of fat or petroleum and is often used for medicinal purposes

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old-crop lambs

The term for a sheep over one year old that has lamb teeth

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olfactory

Anything having to do with an animal's sense of smell

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oligodendrocyte

A type of cell with very few dendritic hairs or branches

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oligospermia

A medical condition in which few sperm are found in semen

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oligotrophia

A medical condition in which nutrients are lacking

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oliguria

A medical condition in which there is not enough urination

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omasum

The term for the third compartment in the stomach of ruminant animals

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Omnivore

Animal that eats both flesh and plants.

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on feed

The term for an animal that is being fed grain or milk, usually for the production of meat

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10000+ Veterinary Terms for Doctors, students & pets owner from a Veterinary dictionary. Our experts define difficult Veterinary language in easy-to-understand explanations of each and every Veterinary term.

Veterinary Terms online Veterinary dictionary provides quick & easy access to hard-to-spell and often misspelled Veterinary definitions through an extensive alphabetical A- Z listing.

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