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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]


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 ?
Definitional adjustments mainly reflect data limitations and differences in country attribution.
But let me begin with a look at the theory of definition that Dancy thinks is at work in the definitional dialogues.
This requires an investigation of the special symbiotic relationship between the interactive market process and their definitional capacities (Proposition 2).
In the forum of a definitional ceremony, the client seeking a consultation would be asked to identify family and cultural community members who have significant "resonance" for her or him.
For his test case, Schiappa chooses the most heated definitional controversy available: whether the unborn human fetus is a person.
The potential purchase of embrace, according to Schiappa, is more productive resolution of definitional disputes (xiv).
While it is true that Kirk's book "named" conservatism in America--and in doing so, incited definitional controversies which remain with us to this day--it is also clear that Kirk's work relates to the partisanship of its time, and ours, in a most eccentric way.
We are using three definitional descriptors that, when combined, express our unique added value: the promotion of positive youth assets (not in a marketing sense--I mean working with strengths not deficits), an intact community, and experiential education.
The volume is well organized with introductory and concluding editorial statements for each of five sections: definitional issues, psychological and motivational problems, evolutionary biology, neurobiological aspects and the question of altruistic behaviors among animals, and finally religious considerations.
The sheer size of the boomers, a generation born between the generally accepted definitional years of 1947 and 1964 has had enormous social and economic impact on America.
It will focus on important issues that appraisers will have to address--such as scope of work, definitional concerns, requisite accounting knowledge, and finding new applications for old skills.
While the authors are aware of the definitional differences among different data sets from public and private sources, they seem oblivious to the most critical definitional problem in any of this analysis--the distinction between establishments (a single location where economic activity takes place) and the enterprise or firm (the total legal or operational entity of one or more enterprises).