(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.
Unavoidable
Definition:
(a.) Not avoidable; incapable of being shunned or prevented; inevitable; necessary; as, unavoidable troubles.
(a.) Not voidable; incapable of being made null or void.
Example Sentences:
(1) The fact that it is still used is regrettable yet unavoidable at present, but the average quantity is three times less than the mercury released into the atmosphere by burning the extra coal need to power equivalent incandescent bulbs.
(2) Wanchu Sherpa, chairman of Everest Summitteers Association of Nepal and two time summiteer himself, told the Guardian shortly after the accident that “nothing can be done to prevent such events” which he described as “simply natural disasters that are unavoidable”.
(3) Unexpected bleeding is at times unavoidable, and the urologic surgeon should have a well-prepared method for managing hemorrhage during each procedure.
(4) Since the importation of toxin-producing diphtheria bacteria is unavoidable and may occur at all times, universal active immunisation in childhood, as well as timely revaccination of adolescents and adults, are mandatory prophylactic measures to prevent new epidemics.
(5) "We believe that this is unavoidable following the recent costs to all the citizens of the UK as a result of banking failures, mismanagement and improper practices," said a spokesperson for the City Reform Group.
(6) Where once Gaga was mysterious and her music unavoidable, the mystique has evaporated and the music easy to miss.
(7) 3.7% of the ultrasound and 2.3% of the CT examinations were of limited value because of unavoidable technical problems.
(8) Some postoperative recurrence is unavoidable after direct attack surgery as portal hypertension is often still present.
(9) Root off- and on-shifts in cell haemolysates at 24 degrees C, produced predominantly by changing pH but with unavoidable subsequent readjustments of the CO(2)-bicarbonate buffer systems, had an initial rapid phase with half-times as low as 0.01 sec.
(10) He said such leakage was “an unavoidable consequence of the lack of ground troops”.
(11) Manchester United's Ed Woodward faces unavoidable question: is it time to sack Van Gaal?
(12) Pictures of the concentration camps served to reinforce the necessity of the war and its unavoidably harsh economic legacy.
(13) Gastric resection may still be unavoidable as a diagnostic procedure in a minority of cases and may represent the primary therapeutic procedure in clinically assessed early-stage and low-risk patients, but it cannot be considered mandatory whenever possible merely for debulking purposes or to obviate possible perforation or hemorrhage.
(14) However they allow to discuss guidelines for the new trials, unavoidably long and accurately designed, which are needed for extending and delineating the clinical use of new human growth hormones.
(15) No viability loss of B. fragilis was noted when pus was stored at 25 degrees C. Only slight loss of viaability of B. fragilis was observed at 15 degrees C. Escherichia coli coexisting in pus with B. fragilis increased several 100fold in 24 h when stored at 25 degrees C, but no significant growth occurred when they were kept at 15 degrees C. Approximately 20 to 40% of E. coli lost their viability when such pus was stored at 4 degrees C. We suggest that 15 degrees C may be an alternative temperature for storage of anaerobic specimens in laboratories where some delay in routine processing is unavoidable.
(16) Six male squirrel monkeys were subjected to a Sidman nondiscriminated avoidance schedule (R-S, S-S-20 sec) that superimposed 3-min conditioned stimuli (CS) unavoidable shock pairings upon the ongoing avoidance behavior.
(17) Diversion may be unavoidable but should be considered only when conservative methods have failed.
(18) Chronically placed subdural electrodes offer the possibility of performing such testing outside of the operating room and without the unavoidable stresses and time limitations of the surgical setting.
(19) The introduction of automation into the laboratory of biology seems to be unavoidable.
(20) This virtually harmless technique frequently provides sufficient information for the diagnosis in patients in whom more traumatic investigations would otherwise have been unavoidable.