(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.
Torus
Definition:
(n.) A lage molding used in the bases of columns. Its profile is semicircular. See Illust. of Molding.
(n.) One of the ventral parapodia of tubicolous annelids. It usually has the form of an oblong thickening or elevation of the integument with rows of uncini or hooks along the center. See Illust. under Tubicolae.
(n.) The receptacle, or part of the flower on which the carpels stand.
(n.) See 3d Tore, 2.
Example Sentences:
(1) In addition, labelled cells were found in the torus semicircularis, in and around the nucleus isthmus pars parvocellularis.
(2) By means of biomicroscopy main regularities in development of the skin capillary network have been revealed in the nail torus in the postnatal ontogenesis.
(3) Patients of the dominant families have often had a torus palatinus.
(4) The torus also received bilateral input from the nucleus ventromedialis thalami, nucleus of lemniscus lateralis, nucleus medialis, anterior octaval nucleus, descending octaval nucleus, and the reticular formation.
(5) We employed intracellular recording and labeling methods to investigate ampullary and tuberous information processing in laminae 1-5 of the dorsal torus semicircularis of Eigenmannia.
(6) A cylinder of endoplasmic reticulum is intimately involved in cross-wall deposition from its earliest stages; as the wall grows in, it becomes increasingly constricted in the pore region, finally assuming a torus-like configuration.
(7) Unlike tuberous afferents to the torus, ampullary afferents had numerous varicosities along their finest-diameter branches.
(8) The anterior end of the olfactory groove was first classified into three types, i.e., normal type, obliterated type (obliterated by cancellous bone) and dangerous type (with Recessus cristae galli and Torus olfactorius).
(9) This independence of the auditory and the second order lateral line nuclei is further substantiated by their separate projection to other brain areas, like the torus semicircularis of the midbrain, and their functional properties.
(11) Of the three neuronal types observed in the torus: fusiform, rounded-ovoid and triangular-stellate, the highest percentage corresponds to the neurons with rounded-ovoid somata, followed by the triangular-stellate and then the fusiform neurons.
(12) Single-unit recordings from neurons in the torus semicircularis of Rana ridibunda were analyzed to determine the degree to which these neurons can detect acoustic stimuli superimposed on continuous, broad-band noise.
(13) Scattered fibers were found in all other parts of the brain except in the cerebellum, the nucleus isthmi and the torus semicircularis, where no immunoreactivity could be detected.
(14) Impulse responses of single units located in the torus semicircularis of the immobilized lake frog (Rana ridibunda) to long-lasting characteristic frequency tones modulated by low-frequency pseudorandom noise were registered.
(15) In the mesencephalon, FMRF-amide-containing fibres appeared in the dorsal tegmentum, in the torus semicircularis and in the deep layers of the tectum opticum.
(16) The lateral preglomerular nucleus receives an electrosensory input from nucleus electrosensorius in the diencephalon, but it also receives auditory and mechanosensory inputs directly from the torus semicircularis.
(17) the laminar nucleus of the torus semicircularis, a cell group which receives spinal afferents and projects to the spinal cord as the mammalian periaqueductal gray.
(18) In the case of squalene-based black lipid membranes (BLMs), in contrast, vesicles do not nucleate lenses but they apparently do fuse with the torus at the bilayer boundary.
(19) Stability of the inner torus ring is achieved when DNA phosphate groups are about 90% neutralized by trivalent cations, another prediction that is consistent with the observed formation of toruses in these conditions.
(20) The present study demonstrates that (i) the lateral lemniscus is supplied by fibers of the medullary acoustic nucleus (nucleus intermedius) and the superior olive; (ii) the subtectal dorsal tegmentum can be clearly separated into a dorsally located torus semicircularis and a ventrally situated dorsal tegmental nucleus, the former processing auditory and vibratory, the latter vestibular signals; and (iii) the hearing capabilities of this animal, as estimated from the tuning of toral units, are comparable to those of anurans with extratympanic sound transmission.