Glossary Terms: M

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Mainstreaming
The concept that students with disabilities should be integrated with their non-disabled peers to the maximum extent possible, when appropriate to the needs of the student with a disability.

Magnetic Resonance Imaging (MRI)
A scanning procedure that uses radio waves and magnets to show images of body parts. This technique is generally used to visualize soft tissues.

Mastoid
Back portion of the temporal bone that contains the inner ear.

Mastoid Surgery
Surgical procedure to remove infection from the mastoid bone.

Mediation
A confidential, voluntary process that allows parties to resolve disputes without a formal due process hearing. An impartial mediator helps the parties to express their views and positions and to understand the other’s views and positions. The mediator’s role is to facilitate discussion and help parties reach an agreement – not to recommend solutions or take positions or sides.

Meige Syndrome
Movement disorder that can involve excessive eye blinking (blepharospasm) with involuntary movements of the jaw muscles, lips, and tongue (oromandibular dystonia).

Ménière's Disease
Inner ear disorder that can affect both hearing and balance. It can cause episodes of vertigo, hearing loss, tinnitus, and the sensation of fullness in the ear.

Meningitis
Inflammation of the meninges, the membranes that envelop the brain and the spinal cord; may cause hearing loss or deafness.

Middle Ear
Part of the ear that includes the eardrum and three tiny bones of the middle ear, ending at the round window that leads to the inner ear.

Mild Hearing Loss
A hearing loss of 26–40 decibels (dB). Individual cannot hear a whispered conversation in a quiet atmosphere at close range.

Misarticulation
Inaccurately produced speech sound (phoneme) or sounds.

Mixed Hearing Loss
A hearing loss with combined sensorineural and conductive elements.

Moderate Hearing Loss
A hearing loss of 41–55 decibels (dB). Individual cannot hear normal conversation in a quiet atmosphere at close range.

Moderate-to-Severe Loss
A hearing loss of 56–70 decibels (dB).

Monaural Amplification
The use of one hearing aid instead of two.

Morpheme
A linguistic unit of relatively stable meaning that cannot be divided into smaller meaningful parts. (Source: American Heritage Dictionary)

Motion Sickness
Dizziness, sweating, nausea, vomiting, and generalized discomfort experienced when an individual is in motion.

Motor Speech Disorders
Group of disorders caused by the inability to accurately produce speech sounds (phonemes) because of muscle weakness or incoordination or difficulty performing voluntary muscle movements.

Multiple Disabilities
An IEP term used to define a combination of disabilities that causes severe educational needs that require multiple special education programs, for example, mental retardation with blindness.

Myringotomy (medical term)
Surgery which opens the eardrum to allow drainage of fluid from the middle ear.