(n.) A luminous circle, usually prismatically colored, round the sun or moon, and supposed to be caused by the refraction of light through crystals of ice in the atmosphere. Connected with halos there are often white bands, crosses, or arches, resulting from the same atmospheric conditions.
(n.) A circle of light; especially, the bright ring represented in painting as surrounding the heads of saints and other holy persons; a glory; a nimbus.
(n.) An ideal glory investing, or affecting one's perception of, an object.
(n.) A colored circle around a nipple; an areola.
(v. t. & i.) To form, or surround with, a halo; to encircle with, or as with, a halo.
Example Sentences:
(1) Sec-alpha-halo-nitro compounds are active antibacterial and antifungal agents, and the sec-bromo derivatives are the most active and stable.
(2) For conservative treatment of injuries of the cervical spine, two different methods are available: The HALO fixator and the collar.
(3) Thickening of the gallbladder wall, a subserosal "halo" of edema, pericholecystic abscess, and marked gallbladder distention were consistent findings in AAC.
(4) An Mr 15,000 protein was produced at higher levels by halo variants than by nonhalo-producing cells.
(5) Management intervention was identified as the cause of deterioration in four of 134 patients undergoing operative intervention, in three of 60 with skeletal traction application, in two of 68 with halo vest application, in two of 56 undergoing Stryker frame rotation, and in one of 57 undergoing rotobed rotation.
(6) PRL or its solvent were administered at different time points (0, 4, 8, and 12 hours after light onset = HALO) during 5 consecutive days.
(7) A peripheral halo with delayed enhancement was noticed in 12 patients (42.8%) Histologic correlation in hepatocellular carcinomas showed that the degree of contrast enhancement corresponded to tumor vascularity and that the peripheral halo corresponded to fibrous capsular structure.
(8) 1) small elevation, 2) spotty barium fleck, 3) ill defined barium fleck and 4) barium fleck with halo were suggested the possibility of inflammatory bowel diseases.
(9) These cases suggest that a halo sign does not guarantee a benign process.
(10) The correction by halo-up-Extension runs on an average of 35% of the total correction.
(11) When cultures were overlaid with an acridine orangedeoxyribonucleate-agar (ADA) mixture, incubated for 1 to 3 hr, and observed under ultraviolet light, clear halos developed around colonies that produced deoxyribonuclease.
(12) In the light of these results and of recently published reports a rational diagnostic approach to hypoechoic lesions without halo in echogenic livers varies, depending on such factors as known primary malignancy or site of the lesion.
(13) Subsequent treatments are given using skin tattoos and laser alignment for target placement within the isocenter of the linear accelerator, and a modified portable halo-ring device is used for skull immobilization.
(14) A significant number of Alzheimer patients exhibited a more extensive smooth "halo" of periventricular hyperintensity when compared with controls (p = .024).
(15) (b) Positioning of patients for operation, including those with a halo vest, is efficiently carried out with safety and ease.
(16) Based on a personal series of 47 cases of aberrant papillae and a review of the literature, the authors stress the relative frequency of this anomaly and the almost constant possibility of making the diagnosis by means of intravenous pyelography on the basis of the following signs: regular, round or oval filling defect, surrounded by a fine opaque halo which separates it from the surrounding urine; or a notch with a regular arc-shaped border prolonged towards the exterior at its two extremities by a small spur.
(17) 2) A halo peak appeared in group II and showed the trend of disappearance in group III, however, no peak shift was observed in all groups.
(18) The halo brace has presented the neuroscience nurse with a new challenge in the care of victims of cervical spine trauma.
(19) Skull traction and a halo-vest were intermediate in patients with loss of motion, and the degree of loss of range was essentially equal.
(20) At the end of the third reperfusion day, an atypical form of bouton degeneration was found, consisting of massive occurrence of enlarged (greater than 4 microns) boutons encircled by a clear halo.
Surround
Definition:
(v. t.) To inclose on all sides; to encompass; to environ.
(v. t.) To lie or be on all sides of; to encircle; as, a wall surrounds the city.
(v. t.) To pass around; to travel about; to circumnavigate; as, to surround the world.
(v. t.) To inclose, as a body of troops, between hostile forces, so as to cut off means of communication or retreat; to invest, as a city.
(n.) A method of hunting some animals, as the buffalo, by surrounding a herd, and driving them over a precipice, into a ravine, etc.
Example Sentences:
(1) Such was the mystique surrounding Rumsfeld's standing that an aide sought to clarify that he didn't stand all the time, like a horse.
(2) The lesion (10.6 X 9.8 mm) was a well-defined ellipsoid granuloma due to a foreign body with a central zone of necrosis surrounded entirely by a fibrous wall.
(3) It was hypothesized that compensatory restraining influences of surrounding soft tissues prevented a more severe facial malformation from occurring.
(4) Their receptive fields comprise a temporally and spatially linear mechanism (center plus antagonistic surround) that responds to relatively low spatial frequency stimuli, and a temporally nonlinear mechanism, coextensive with the linear mechanism, that--though broad in extent--responds best to high spatial-frequency stimuli.
(5) "I was eight in 1983, but I remember a plane that flew low over our Bulawayo suburb and army loud-hailers screaming: 'You are surrounded.'
(6) The usefulness of the proposed method is obvious in cases where the composition of a precipitate on LM scale is to be compared with the LM appearance of the surrounding tissue.
(7) Degraded visual acuity had a significant effect on cadence, foot placement, and foot clearance, but visual surround conditions did not.
(8) Computed tomography does not allow differentiation between these lesions and surrounding normal tissues.
(9) The efficacy of the process is dependent on immersion medium, while the degree of surrounding tissue damage is dependent on energy dose.
(10) In cat, DARPP-32-immunoreactive cell bodies identified as Müller cells were demonstrated in the inner nuclear layer (INL) with processes closely surrounding the cell soma of photoreceptors in the outer nuclear layer.
(11) In the univariate life-table analysis, recurrence-free survival was significantly related to age, pTNM category, tumour size, presence of certain growth patterns, tumour necrosis, tumour infiltration in surrounding thyroid tissue and thyroid gland capsule, lymph node metastases, presence of extra-nodal tumour growth and number of positive lymph nodes, whereas only tumour diameter, thyroid gland capsular infiltration and presence of extra-nodal tumour growth remained as significant prognostic factors in the multivariate analysis.
(12) Surrounding intact ipsilateral structures are more important for the recovery of some of the language functions, such as motor output and phonemic assembly, than homologous contralateral structures.
(13) The dual-probe system incorporates a central collimated probe for monitoring activity in the LV surrounded by an annular detector collimated in such a manner as to provide simultaneous real-time monitoring of the LV background activity.
(14) This technique is sensitive to the optical anisotropy within the muscle, including that due to intrinsic properties of the protein molecules as well as that due to the regular arrangement of proteins in the surrounding medium.
(15) Surrounding parenchyma may be partially compressed.
(16) The stage of a given malignancy, representing the degree of spread of the tumor to its local surroundings or distant sites, is the best predictor of long-term survival.
(17) At this stage of the observation period the labeling index was very low in surrounding liver, but still high in the gamma-glutamyltranspeptidase-positive areas.
(18) The third effect was a shift in center-surround balance towards a more dominant center.
(19) Although sound pressure levels are high, they are probably reduced before reaching the cochlea of the fetus because of the surrounding amniotic fluid and the fluid in the middle ear.
(20) Glial siphoning can distribute the potassium preferentially toward the blood vessels in the area, leading to an elevation in potassium concentration in the ECF surrounding the vascular smooth muscle of the arterioles.