(a.) Such as must be; impossible to be otherwise; not to be avoided; inevitable.
(a.) Impossible to be otherwise, or to be dispensed with, without preventing the attainment of a desired result; indispensable; requiste; essential.
(a.) Acting from necessity or compulsion; involuntary; -- opposed to free; as, whether man is a necessary or a free agent is a question much discussed.
(n.) A thing that is necessary or indispensable to some purpose; something that one can not do without; a requisite; an essential; -- used chiefly in the plural; as, the necessaries of life.
(n.) A privy; a water-closet.
(n.) Such things, in respect to infants, lunatics, and married women, as are requisite for support suitable to station.
Example Sentences:
(1) Apparently, the irradiation with visible light of a low intensity creates an additional proton gradient and thus stimulates a new replication and division cycle in the population of cells whose membranes do not have delta pH necessary for the initiation of these processes.
(2) The low affinity of several N1-alkylpyrroleethylamines suggests that the benzene portion of the alpha-methyltryptamines is necessary for significant affinity.
(3) Intravesical BCG is clearly superior to oral BCG, and controlled studies have demonstrated that percutaneous administration is not necessary.
(4) These studies show that metabolic activation is necessary for the expression of the mutagenic activity of aflatoxins B1 and G1 in N. crassa.
(5) In practice, however, the necessary dosage is difficult to predict.
(6) In order to control noise- and vibration-caused diseases it was necessary not only to improve machines' quality and service conditions but also to pay special attention to the choice of operators and to the quality of monitoring their adaptation process.
(7) It is likely that trunk mobility is necessary to maintain integrity of SI joint and that absence of such mobility compromises SI joint structure in many paraplegics.
(8) If there is a will to use primary Care centres for effective preventive action in the population as a whole, motivation of the professionals involved and organisational changes will be necessary so as not to perpetuate the law of inverse care.
(9) Obamacare price hikes show that now is the time to be bold | Celine Gounder Read more No longer able to keep patients off their plans outright, insurers have resorted to other ways to discriminate and avoid paying for necessary treatments.
(10) Duesberg contends that HIV is neither necessary nor sufficient to cause AIDS.
(11) It is therefore necessary, to look at typical clinical manifestations, i.e.
(12) We have examined the in vitro membrane assembly characteristics of a variety of leader peptidase mutants and found that domains required for insertion in vivo are also necessary for insertion in vitro.
(13) Two hours after the administration, the combinations of ethanol plus diazepam and ethanol plus meclophenoxate impaired significantly the number of necessary repetitions.
(14) The first experiment gave good results, although only one participant had any previous experience of hinge axis location, and it is debatable whether or not this experience is necessary before satisfactory results can be obtained.
(15) For consistent identification of the normal pancreas, preliminary longitudinal scanning at, or near, the mid-line and subsequent oblique scanning in the long axis are necessary prerequisites in delineating the anatomic outline of the pancreas.
(16) Survival and healing of "extremely severe" grade intoxication can only be obtained through a surgical intervention within the first hours; a laparotomy will indicate the depth of the lesions, which is not determined by endoscopy, and will consist of Celerier's stripping method and if necessary a gastrectomy, more seldom a cephalic duodeno-pancreatectomy.
(17) Socio-economic improvement or behavioural changes appear necessary for the control of trachoma in endemic areas.
(18) This stimulation is mediated by one receptor with an apparent affinity of 3.3 X 10(-6) M. The hydroxyl group in the para position on phenylethanolamine was absolutely necessary to obtain an agonist whereas the meta hydroxyl group or the presence of a catechol almost suppressed the activity.
(19) Provided that adequate reflection is given and the appropriate moment chosen, it is well tolerated and provides all the necessary information.
(20) Total excisional biopsy is necessary to properly assess an adenoma microscopically.
Unnecessary
Definition:
Example Sentences:
(1) The results of the evaluation confirm that most problems seen by first level medical personnel in developing countries are simple, repetitive, and treatable at home or by a paramedical worker with a few safe, essential drugs, thus avoiding unnecessary visits to a doctor.
(2) There is no evidence that health-maintenance organizations reduce admissions in discretionary or "unnecessary" categories; instead, the data suggest lower admission rates across the board.
(3) This may result in the unnecessary implementation of antidotal therapy.
(4) Thus, the enzyme-immunoassay shows specificity and sensitivity comparable to radioimmunoassay making use of radioactive tracer unnecessary.
(5) It is important to be aware of the histological characteristics of this essentially benign condition so that unnecessary radical therapies can be avoided.
(6) However, patients can be taught how to retard the onset of wrinkles by avoiding unprotected sun exposure, unnecessary facial movements, and certain sleeping positions.
(7) It is unnecessary to make any special more complicated incision designed to avoid lymphatics.
(8) In these cases, a thyroid scintiscan may avoid an unnecessary surgical intervention.
(9) The differentiation between the various modes of involvement is essential as some of them may be confused with recurrence and the clinician might resort to unnecessary drastic measures like enucleation.
(10) Check out the latest bill from Russia's parliament, the Duma: its aim is to ban the "unnecessary" usage of foreign words (in cases where there is a pre-existing Russian counterpart).
(11) Standard additions are unnecessary; Pt concentrations are read from a calibration chart of peak heights, which is linear up to 1.6 mg per liter.
(12) We encountered terrorists who wanted to kill us and we did everything we could to prevent unnecessary injury."
(13) Thus, modification in the dosage regimen of digoxin may be unnecessary in the case of coadministration with captopril.
(14) Only CT-guided or direct parasternal biopsy including immunhistochemistry can yield a reliable preoperative diagnosis and prevent unnecessary operation of lymphomas.
(15) The sonographic method, with a 97.7% specificity and a negative predictive value of 89.5%, proved to be specific enough to eliminate the necessity of routine catheterization for measuring residual bladder volumes of greater than or equal to 150 cm3, thus decreasing the incidence of some major postoperative complications that can occur due to unnecessary catheterization.
(16) With these scores we expect to facilitate the diagnostic screening, to indicate the way of therapy and to avoid unnecessary surgery for urinary incontinence in cases of motor-urge-incontinence (detrusor instability, unstable bladder), as long as a urodynamic examination is not feasible on every incontinent women.
(17) In some cases this has led to the misdiagnosis of mediastinal pathology and an unnecessary thoracotomy.
(18) No abdominal injuries were present in the group in whom the lavage results were negative, while no unnecessary laparotomies were performed in the group with a 4+ or 5+ positive DPL (calorimetric method).
(19) It would thus appear that repetition of the hCG injection at intervals of less than 4 days is unnecessary, and that a total stimulation period of 2-3 weeks is sufficient.
(20) The importance of ECG studies in these cases is stressed in order to establish the differential diagnosis and avoid unnecessary delays in the application of the proper therapy.