(n.) The eighth part of a circle; an arc of 45 degrees.
(n.) The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees.
(n.) An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O¡, but being itself the eighth part of a circle. Cf. Sextant.
(n.) One of the eight parts into which a space is divided by three coordinate planes.
Example Sentences:
(1) With stimulation of the octants next to the vertical meridian, this component was of large amplitude, while with stimulation of the octants next to the horizontal meridian, it was small and inconspicuous.4.
(2) The absolute configuration is proposed based on the octant rule and a biogenetic pathway for this type of homoisoflavan is briefly discussed.
(3) These criteria are: (1) the direction of the maximal spatial ST vector points either to the right-anterior-inferior or to the right-posterior-inferior octant, and (2) the magnitude of the projection of the maximal spatial ST vector is greater than or equal to 0.15 mV in the horizontal plane.
(4) The mid-temporal vectors were located in the left postero-superior octant, and the late portion of the loop was inscribed anteriorly to the right with conspicuous conduction delay.
(5) Their directions pointed either to: (1) the right-anterior-inferior, or (2) the right-posterior-inferior octant.
(6) The greatest steepening in the eyes treated with radial keratotomy compared with the untreated eyes occurred at 1.5 to 2.5 mm peripheral to the corneal apex in the inferonasal and nasal octants.
(7) Myocardial area and midwall perimeter were obtained for each octant, and wall thickness was calculated at end diastole (ED), isovolumetric systole (IS), and end systole (ES).
(8) The segmental area and its changes during the cardiac cycle were measured and calculated for each octant.
(9) Variability of sample size per octant was noted, but when averaged across entire muscles, it was in all instances greater than 33%.
(10) In this paper, circular dichroism (CD), sector projection and reverse octant rule projection of four diterpenoid dilactones and five tylophorines (two of them, 6, 8, are new compounds) are reported in which reverse octant rule projection is the first application to the configuration determination of diterpenoid dilactone.
(11) These cells were seen in the temporal half and dorsal-dorsonasal and ventral-ventronasal octants of the ipsilateral retina and accounted for 11.5% of all the labeled cells.
(12) The short-axis cross-sectional images were divided into octants and were analyzed.
(13) C18H22N4O2, Mr = 326.40, orthorhombic, Pbca, a = 19.475 (10), b = 10.435 (20), c = 8.762 (20) A, V = 1780.6 A3, Z = 4, Dx = 1.22 g cm-3, lambda(Mo K alpha) = 0.7107 A, mu = 0.76 cm-1, F(000) = 696, room temperature, 1564 reflections averaged from two octants, R = 0.044, wR = 0.050 for 669 observed reflections with I greater than sigma(I).
(14) Thirteen-channel visual evoked potentials (VEPs) to pattern-onset were recorded with stimuli restricted to individual octants of the peripheral field, to halves and to quadrants of the fovea.
(15) In patients with acute inferior-posterior and right ventricular infarction, the serial maximal spatial ST vector pointed to the right-posterior-inferior octant during the whole course of the acute stage.
(16) Stimuli consisting of checkerboard-filled octant or annular octant segments are presented as appearance-disappearance pulses at sixteen different positions in the visual field in randomized order.
(17) The locations of evoked cortical activity in the occipital, parietal and temporal lobes are represented on a Mercator projection map for each octant or octant segment stimulated.
(18) The delta vector is formed by the pre-excitation, it is oriented toward the right posterior superior, the right posterior inferior and the right anterior superior spatial octants.
(19) With upper field octants, the peak at 100 msec was surface-negative, while with lower field octants it was reversed in polarity.5.
(20) By using lactone sector rule, the olefin octant rule, allylic oxygen rule and Beecham rule with C = C-C-O and C = C-C = O chromophore, their absolute configurations were assigned.
Octile
Definition:
(n.) Same as Octant, 2.
Example Sentences:
(1) As in the BAEC studies RA-octil was without beneficial effects on the isolated ischaemic rat heart.
(2) Furthermore we used the n-octyl-ester of ramipril (RA-octil) which was shown to have no ACE-inhibitory action.