(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.
Unessential
Definition:
(a.) Not essential; not of prime importance; not indispensable; unimportant.
(a.) Void of essence, or real being.
(n.) Something not constituting essence, or something which is not of absolute necessity; as, forms are among the unessentials of religion.
Example Sentences:
(1) These data indicate that the adrenal medulla is unessential for normal endurance exercise as long as liver glycogen is available.
(2) On the basis of these results, limbic regions of the cat's brain might be considered unessential for intact learning and mnemonic functions.
(3) Because the mutant can successfully infect nonpermissive cells, phage-induced deoxynucleoside monophosphate kinase appears to be an unessential function for phage production.
(4) Trp-155 in bovine DNase A (EC 3.1.4.5) appeared to be unessential for the enzymatic activity for the following reasons: (1) A unique peptide which suggests the environmental difference of Trp-155 was obtained from porcine pancreatic DNase A.
(5) Two of 13 histidyl residues were modified irreversibly due to Bamberger's cleavage reaction, but these two residues were found to be unessential for RNA polymerase activity.
(6) Although cyclic AMP has been shown to be unessential for growth of E. coli under optimal laboratory conditions in glucose-containing medium, it undoubtedly can play a role in survival.
(7) This can be either the consequence or cause of the unessential loss of body weight well before death.
(8) A genetic map of the prophage was established using defective, heat-induced lysates of int- lysogens both in vegetative crosses with sus mutants of essential genes and in transduction of the four unessential genes to lysogenic recipients.
(9) The abrasion is minimal, the tissue reaction to abrasion products is unessential.
(10) For complex formation, the isoprenoid side chain and hydroxy group of alpha-tocopherol are unessential and, rather, the methyl groups attached to the aromatic ring of the chromanol moiety seems to be responsible.
(11) The phenomenon is also an important part of the mechanisms whereby those unessential factors pathologize making various kinds of 'itis'.
(12) The interpeak--intervals only unessentially differ from the standard group.
(13) One transformant contained a plasmid that encoded an unessential gene, STP1, that in multiple copies enhanced the suppression of SUP4(G37) and caused increased production of mature SUP4(G37) product.
(14) This analysis has permitted a functional map of the protein to be drawn and classifies five segments of the protein, which together contain 48% of the sequence, as unessential to the biological activity of the protein.
(15) The unessential genes lI, iny, cII and, at least to some extent, even the integrase gene int are not subject to negative control by the repressor, the product of gene cIII.
(16) The bacteriophage T4 unf gene, known to be involved in the arrest of transcription from cytosine-containing DNA, is unessential except in Escherichia coli strains containing plasmid pR386.
(17) Thus, Lys-50 and Lys-82 are unessential for enzymatic activity while Lys-60 may play a minor role.
(18) We conclude that chemotactin-induced aggregation is similar to the other chemotactin-induced PMN functions in the requirements for proper temperature and intact glycolytic pathways; in contrast, however, and intact cytoskeletal microtubular system appears unessential for this response.
(19) Nor have you been afraid to divest whatever is unessential in order to regain the authority and trust which is demanded of ministers of Christ and rightly expected by the faithful,” he said.
(20) After blocking the unessential thiol groups with NEM, the essential cysteine was labeled with N-(4-dimethylamino-3,5-dinitrophenyl)maleimide (DDPM).