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/de·fin·i·tive/ (dĕ-fin´ĭ-tiv)
1. established with certainty.
2. in embryology, denoting acquisition of final differentiation or character.
3. in parasitology, denoting the host in which a parasite reaches the sexual stage.


Biology Fully formed or developed, as an organ or structure.

de·fin′i·tive·ly adv.
de·fin′i·tive·ness n.


Etymology: L, definitivus, a limiting
1 final; clearly established without doubt or question.
2 (in embryology) fully formed in the final differentiation of a tissue, structure, or organ. Compare primitive.
3 (in parasitology) pertaining to the host in which the parasite undergoes the sexual phase of its reproductive cycle.


Fully differentiated or developed.

Patient discussion about definitive

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 ?
The importance of the definitive exercise of teaching authority is already evident from the fact that the response the faithful must give to the pope and the college of bishops when they proclaim doctrine definitively is the reason why they are endowed with the divine gift of infallibility in such teaching.
Rex Harrington as A Man moved definitively through a sort of rake's progress from summer into winter with energetic and emotional partners Evelyn Hart (spring), Greta Hodgkinson (summer), Martine Lamy (autumn) and numerous others en route.
For example, in clinical practice, even when they occur, adverse impacts on immune system function are unlikely ever to be definitively linked to pesticide exposures, except in rare cases.
I can tell you definitively that I am the first Massachusetts state senator to come out, but I won't be the last.
Providers had two main concerns: first, how to prepare for changes, given that HCFA had not to date issued the revised State Operations Manual that was to spell out new measures definitively for both providers and surveyors, and second, whether surveyors would use the system's quality indicators punitively.
The purpose of the new norms is to impose expressly the duty to preserve the truths proposed definitively by the magisterium of the church and to institute canonical sanctions concerning the same matter.
Until the issue is definitively resolved, however, CPAs should carefully craft the form of these engagements to address each of the factors cited by the court.
But ultimately, her relentless quest for the truth about La Penca came to a surprising conclusion when she discovered definitively that the bomber was a Sandinista agent.
The ability to address the side-branch definitively with a Tryton without interfering with treatment of the main vessel is one of the fundamental strengths of this approach.
French medical technology company Implanet (Paris: IMPL) (Euronext: IMPL) has been definitively granted intellectual protection for its Jazz technology in Europe until 2031 (under patent number EP 2521500), the company said on Monday.
A new study has shown that microarray technology, which allows researchers to simultaneously compare the degree to which hundreds of genes are expressed (converted into proteins), now makes it possible to more definitively identify skin lesions in mice that are thought to be at high risk of progressing to a type of cancer known as squamous cell carcinoma (SCC).
They did not see a shot from the camera angle that definitively showed the wrong call was made on the field until it was too late.