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A B
C D E
F G H
I J K
L M N
O P Q
R S T
U V W
X Y Z
Obsession
A repetitive and persistent idea that intrudes into a person’s thoughts.
Occipital Lobe
The portion of each hemisphere of the cerebrum that deals with vision and visual
perception; located in the rear of the head, behind the parietal lobe.
Occupational Therapist
A professional who programs and/or delivers instructional activities and
materials to help children and adults with disabilities learn to participate in
useful activities.
Ocular Mobility
The eye’s ability to move.
Ombudsman
An official appointed to investigate complaints and speak for individuals with
grievances.
Operant Conditioning Audiometry
Method of measuring hearing by teaching the individual to make an observable
response to sound.
Ophthalmologist
A physician who specializes in the diagnosis and treatment of diseases of the
eye.
Optic Nerve
The nerve that carries impulses from the eye to the brain.
Optician
A specialist trained to grind lenses according to a prescription.
Optometrist
A vision professional who specializes in the evaluation and optical correction
of refractive errors.
Oral Approach
A philosophy and approach to educating deaf children that stresses learning to
speak as the essential element for integration into the hearing world.
Oral Language
Those verbal communication skills needed to understand and to use language .
Organic
Factors usually associated with the central nervous system that cause a
handicapping condition.
Organicity
A disorder of the central nervous system; brain damage.
Orientation
The ability to establish one’s position in relation to the environment.
Orthopedic Impairment
Any disability caused by disorders to the musculoskeletal system.
Orton-Gillingham Approach
An approach to teaching literacy devised by Dr. Samuel Orton, Anna Gillingham,
and Bessie Stillman; the approach stresses a multisensory, phonetic, structured,
sequential approach to learning.
Ossicles
Three small bones (hammer, anvil, and stirrup) that transmit sound energy from
the middle ear to the inner ear.
Osteogenesis Imperfecta
A hereditary condition in which the bones do not grow normally and break easily;
also called Brittle Bone Disease.
Otitis Media
An infection or inflammation of the middle ear that can cause a conductive
hearing loss.
Otolaryngologist
A medical doctor specializing in diseases of the ear and throat.
Otologist
A physician who specializes in the diagnosis and treatment of diseases of the
ear.
Otoselerosis
A bony growth in the middle ear that develops around the base of the stapes,
impeding its movement and causing hearing loss.
Overcorrection
A procedure in which the learner must make restitution for, or repair, the
effects of his/her undesirable behavior and then put the environment in even
better shape than it was prior to the misbehavior; used to decrease the rate of
undesirable behaviors.
*See
Reference Information
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