(a.) Belonging to the essence, or that which makes an object, or class of objects, what it is.
(a.) Hence, really existing; existent.
(a.) Important in the highest degree; indispensable to the attainment of an object; indispensably necessary.
(a.) Containing the essence or characteristic portion of a substance, as of a plant; highly rectified; pure; hence, unmixed; as, an essential oil.
(a.) Necessary; indispensable; -- said of those tones which constitute a chord, in distinction from ornamental or passing tones.
(a.) Idiopathic; independent of other diseases.
Example Sentences:
(1) However, medicines have an important part to play, and it is now generally agreed that for the very poor populations medicines should be restricted to those on an 'essential drugs list' and should be made available as cheaply as possible.
(2) 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.
(3) Nucleotide, which is essential for catalysis, greatly enhances the binding of IpOHA by the reductoisomerase, with NADPH (normally present during the enzyme's rearrangement step, i.e., conversion of a beta-keto acid into an alpha-keto acid, in either the forward or reverse physiological reactions) being more effective than NADP.
(4) Community involvement is a key element of the Primary Health Care (PHC) approach, and thus an essential topic on a course for managers of Primary Health Care programmes.
(5) No significant fatty acid binding by proteins was detected in S. cerevisiae, even when grown on a fatty acid-rich medium, thus indicating that such proteins are not essential to fatty acid metabolism.
(6) The UK's standard position on ICC indictees is to avoid all contact unless "essential".
(7) In spite of important differences in size, chemical composition, polymer density, and configuration, biological macromolecules indeed manifest some of the essential physical-chemical properties of gels.
(8) Most cis AB sera have anti-B activity, essentially at 4 degrees C. In saliva A and H substances are found in normal amounts but B substance is only evidenced by inhibition of autologous cells agglutination.
(9) Treatment with trypsin gave essentially one radioactive peptide, the active site peptide, of approximately 2300 molecular weight.
(10) We conclude that this enzyme is essentially identical to the native enzyme and should be very useful in the future study of this important hydroxylase.
(11) Thus serum ionized calcium in untreated essential hypertensive patients may predict the blood pressure response to the slow calcium channel blocker verapamil.
(12) The effects of supervised mild aerobic exercise at the work load of the blood lactate threshold for 10 weeks on serum lipids and apolipoproteins were studied in 24 patients with essential hypertension.
(13) No other essential regulatory sequence is located further upstream.
(14) Based on the results of the Community AIM Exploratory Action, further collaborative work is required at EEC level to create an Integrated Health Information Environment (IHE) allowing essentially for integration, modularity and security.
(15) Ovarian vein sampling for androgen was essential in locating this patient's microscopic tumor.
(16) After approximately 20 in vitro passages, Chinese hamster kidney (CHK) cell cultures transformed upon exposure to different strains of SV 40 can show a diploid modal chromosome number of 22 with chromosome counts exclusively or essentially in the diploid range (20-25).
(17) An official from Cafcass, the children and family court advisory service, tried to persuade the child in several interviews, but eventually the official told the court that further persuasion was inappropriate and essentially abusive.
(18) Of 55 new open reading frames analysed by gene disruption, three are essential genes; of 42 non-essential genes that were tested, 14 show some discernible effect on phenotype and the remaining 28 have no overt function.
(19) Essential characteristics of the composite bone cement included a homogeneous and uniform fiber distribution, and a minimal increase in apparent viscosity of the polymerizing cement.
(20) The median blood levels were lower in hyperacidic subjects and higher in hypoacidic patients; the urinary excretion of the digitalis compound showed no essential differences.
Unimportant
Definition:
Example Sentences:
(1) The amount of EB or progesterone injected seemed unimportant but, in either case, had to be given within a limited diurnal period of sensitivity.
(2) For example, we hypothesize that competition can be unimportant even if it is very intense: no such hypothesis is possible unless importance is distinguished from intensity.
(3) A comparison of the time course of this time-locked response with that of the kernel prediction indicated that nonlinear temporal effects of order higher than two are unimportant.
(4) Nucleotide pyrophosphatases seem to play an unimportant role in guanylyl imidodiphosphate conversion, while alkaline phosphatase is possibly of more importance.
(5) Moreover, M1-muscarinic receptors appear to be relatively unimportant in mediating the effects of carbachol on short circuit current (ISC).
(6) Cl measured with each method exceeded Crs (p less than .05), but the magnitude was clinically unimportant.
(7) According to these results the acetylator phenotype seems to be an unimportant factor in therapy with dihydralazine.
(8) Snoring usually is trivial and unimportant, but it can turn into a social or medical problem.
(9) Analysis of this time delay as a function of the factor Xa concentration indicates that the gain of the feedback loop of factor V activation by thrombin is so high that the contribution of factor V activation by factor Xa is relatively unimportant for factor Xa concentrations in the nanomolar range.
(10) This is unusual, although clinically unimportant muscle involvement in trypanosomiasis has been described.
(11) But he is warm and sharp, and the punchlines begin to feel unimportant when the journey there is so much fun.
(12) Since this phenomenon is associated with high concentrations of contrast media in nonflowing blood, the high shear rate in arteries and arterioles make it unimportant in the in vivo situation.
(13) Didn't they realise how unimportant it all was, compared with what we'd been through?"
(14) The contribution made by cytotoxicity to the overall antiviral effect (measured by 24 h yield) was negligible in Flow 2002 cells, and was relatively unimportant in BHK cells.
(15) Safety was very satisfactory: patients complained only rarely of trivial and clinically unimportant side effects; no variations in laboratory tests were noted.
(16) Our results suggest that the osmotic and free-radical scavenging properties of hexoses are relatively unimportant in relation to their antiarrhythmic effects.
(17) Items loading on the first three factors were thought to be generally important, and those on the last three relatively unimportant.
(18) The basis of the program is a valid 'partial' statistical description of the EEG; that description is then used to produce a digital representation of a signal which, if plotted sequentially, might or might not by chance resemble an EEG, that is unimportant.
(19) The involvement of General Practitioners in the care of epilepsy was found to be small, but not unimportant.
(20) Pocket elimination by the use of surgical procedures (gingivectomy, flap operation with bone surgery) may be preferred in regions of the mouth where the aesthetic result is unimportant and where the removal of alveolar bone does not jeopardize the periodontal support of neighbouring teeth.