(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.
Irreducible
Definition:
(a.) Incapable of being reduced, or brought into a different state; incapable of restoration to its proper or normal condition; as, an irreducible hernia.
(a.) Incapable of being reduced to a simpler form of expression; as, an irreducible formula.
Example Sentences:
(1) This, in principle, is similar to creating an irreducible hernia.
(2) Three infants presented with acute scrotal swelling, erythema, and a tender irreducible firm mass within the scrotum.
(3) IVP in both the cases of irreducible prolapse and retention of urine revealed hydroureter and hydronephrosis bilaterally.
(4) Among the problems that have arisen in testing for pregnancy by hCG determination are the interference of proteinuria with urine pregnancy tests, an irreducible level of technical error, the tendency of certain drugs to produce a false-positive result, and quality control.
(5) The authors present a case report of a 65-year-old male with a two-day history of a painful irreducible right inguinal mass; he denied abdominal pain, nausea, vomiting, fever, or chills.
(6) This severe spasticity was associated with irreducible flexion contracture in 49 cases and hyperextension in 3 others.
(7) An exact understanding of the damaged structures and causes of irreducibility frequently makes this an injury often requiring open reduction and selective repair of damaged soft tissue structures.
(8) The case is different from the classic picture in that it is revealed late, by its cardiac manifestations which dominate the clinical picture and lead to an irreducible cardiac insufficiency requiring a heart transplant.
(9) This essay argues that gender is an irreducible category of clinical observation and theorizing, as crucial to the family therapy paradigm as the concept of "generation."
(10) A case of irreducible complete dorsoulnar dislocation of the proximal phalanx of the thumb is presented.
(11) In the paper, the errors in diagnosis of strangulated irreducible hernias are analysed.
(12) The second neurovascular glaucoma, an irreducible complication of the ischemic capillaropathy was for 22% of the studied cases.
(13) Operation was reserved, in general, for patients with irreducible dislocations and incomplete neurological lesions, open reduction and internal fixation being the commonest procedure.
(14) An irreducible sacroiliac dislocation of the pelvic ring with resultant caudal displacement of the injured hemipelvis occurred in a 15-year-old female.
(15) These lesions progress slowly and may eventually result in complete and irreducible trismus.
(16) Of the 50 joints assessed, arthrography demonstrated 39 (78%) with irreducible meniscal displacement and 11 (22%) with reducible displacement.
(17) Irreducible intussusceptions were created in eight adult mongrel dogs.
(18) We report a case of an irreducible volar dislocation of the distal radioulnar joint following open anatomic reduction of the radius.
(19) Four patients in the enteric group had resection; one for neoplasm and three for irreducibility.
(20) As far as irreducible tinnitus are concerned, as anxiety is the most pejorative parameter, not discouraging the patient is very important.