Mean Length of Utterance – The average sentence length, usually taken from a language sample (see above). This is a little tricky because it is not just the number of words, but the number of morphemes (see below). Ex: A child that says “playing” is using a more complex form than one who says “play”. The “ing” has it’s own meaning (present tense- I am doing it now) and counts as an extra morpheme.

Masking Noise – A sound introduced into an ear system for the purpose of covering up an unwanted sound. Masking noises are used during hearing tests to cover–up unwanted responses from a non–test ear. Tinnitus maskers also utilize a masking noise to cover–up tinnitus.

Mastoid – Hard, boney structure behind the ear.

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

Ménière’s Disease – An inner ear disorder that can affect both hearing and balance and is usually associated with vertigo (feeling like you’re spinning when you’re really not), hearing loss, roaring 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 (ossicles) of the middle ear, ending at the oval window that leads to the inner ear.

Mixed Hearing Loss – A hearing loss that has both conductive and sensori–neural components.

Morpheme – Words or parts of words that have meaning. This includes regular words such as house, cat, tree, etc., and “bound morphemes” such as “s” (plural, possessive), “ing”, “est”, “er”, etc.

Morphology refers to the basic building blocks of grammar. (Source: Children’s Speech, Language & Learning Services)

Morphological markers include plurals, the present progressive “ing”, and past tense markers. A child who has difficulty using correct morphology may offer a sentence like “The boy run into the house and eated all of the cookie.” (Source: Children’s Speech, Language & Learning Services)

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

Motor planning – the ability to conceive, plan, and carry out a skilled, non-habitual motor act in the correct sequence from beginning to end. Incoming sensory stimuli must be correctly integrated in order to form the basis for appropriate, coordinated motor responses. The ability to motor plan is a learned ability which is generalized to all unfamiliar tasks so a child does not need to consciously figure out each new task he or she faces. The child with motor planning difficulties may be slow in carrying out verbal instructions and often appears clumsy in new tasks. (Source: North Shore Paediatric Therapy, 2015)

This list is not an exhaustive list of terms in the field, but rather, is meant to provide reference for some of the words you may find in our blogs.
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