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a statement of the meaning of a word or phrase.
conceptual definition an identification of the personal knowledge or connotative meaning of a word. These meanings are often difficult to express; the meaning is “known” but not easily put into words.
operational definition a definition, method, or procedure used to measure or represent a concept or variable in a specific situation.
target definition the definition of a specific target that is identified on the intervention scheme of the omaha system.


In optics, the power of a lens to give a distinct image.
See also: resolving power.
[L. de-finio, pp. -finitus, to bound, fr. finis, limit]


Imaging The clearly delineated limit of a thing visible by the eye. Cf Resolution.


In optics, the power of a lens to give a distinct image.
See also: resolving power
[L. de-finio, pp. -finitus, to bound, fr. finis, limit]

definition (image),

n the property of projected images relating to their sharpness, distinctness, or clarity of outline. Penumbra width is a measure of definition. See also resolution.


establishment of a clear boundary, a clear line of demarcation.

clinical definition
an accurate description of the disease in terms of clinical signs and clinicopathological findings.
epidemiological definition
an accurate description of the disease in terms of its epidemiological parameters of when, where, why and how it has occurred.
genetic definition
an accurate description of a disease in terms of the familial relationships between affected animals.
radiographic definition
a sharp line of demarcation between radiographic densities. A gradual merging of densities creates blurring of the image.

Patient discussion about definition

Q. What is the Definition of Anemia? My doctor told me I have anemia, based on my latest blood tests. What is anemia?

A. In laymans terms it is low iron. Most women get it sometime in their lives due to menstration and other factors. You need to increase your iron intake. Lots of beets, beans, spinich, and lots of other foods can help.

Q. what is the definition of Autism? how would i know if one is autistic and the other one is not , or has only minor disorder ?

A. Autism is a brain development disorder that is characterized by impaired social interaction and communication, and restricted and repetitive behavior, all starting before a child is three years old. This set of signs distinguishes autism from milder autism spectrum disorders (ASD) such as pervasive developmental disorder not otherwise specified. Diagnosis should be made if suspected, by a specialits in child psychiatry or child developement.

Q. What is the definition of Autism?

A. Autism is defined by symptoms from each of the following three categories: qualitative impairment in social interaction, impairment in communication, and restricted repetitive and stereotyped patterns of behavior or interests.

By definition, the onset of autistic disorder is before the age of 3 years, although in some cases, it is not recognized until a child is much older.

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References in periodicals archive ?
Some stipulative definitions are arbitrary, such as when a scientist must coin a new word for a new concept (eg, when Murray Gell-Mann coined the word quark to refer to a new type of subatomic particle).
Much hinges here upon Harvey's definition of the realm of the erotic which she positions against amatory and pornographic literature.
In addition to trying to work out issues with the MPU provisions, states and businesses continue to struggle to develop a definition of "digital goods" or "digital products" while the need for such a definition continues to grow considerably, as more products are delivered electronically.
To follow up on this definition assignment, I require students to write an annotated bibliography that helps them wrestle further with the ways their chosen author and text uses Gothic conventions.
There is nothing in this definition that indicates approval.
The definitions include, but are not limited to, members and associates of criminal street gangs, criminal motorcycle gangs, criminal hate groups, and criminal extremist groups.
Such a conclusion is undercut by Congress's express consideration and rejection of proposed changes to the definitions of non-audit services prohibited by the existing SEC rule.
A cornerstone of surveillance in any setting is development of standardized definitions and methods.
First, these definitions are based on values and describe the desired work place behaviors.
Mental Retardation: Definition, Classification, and systems of support.
The above definitions raise at least five issues for continued consideration.