What's the difference between appear and disappear?

Appear


Definition:

  • (v. i.) To come or be in sight; to be in view; to become visible.
  • (v. i.) To come before the public; as, a great writer appeared at that time.
  • (v. i.) To stand in presence of some authority, tribunal, or superior person, to answer a charge, plead a cause, or the like; to present one's self as a party or advocate before a court, or as a person to be tried.
  • (v. i.) To become visible to the apprehension of the mind; to be known as a subject of observation or comprehension, or as a thing proved; to be obvious or manifest.
  • (v. i.) To seem; to have a certain semblance; to look.
  • (n.) Appearance.

Example Sentences:

  • (1) A spindle cell sarcoma appeared 20 months after implantation of a pellet of 3-methylcholanthrene in the denervated foreleg of an adult frog, Rana pipiens.
  • (2) However, as other patients who lived at the periphery of the Valserine valley do not appear to be related to any patients living in the valley, and because there has been considerable immigration into the valley, a number of hypotheses to explain the distribution of the disease in the region remain possible.
  • (3) This trend appeared to reverse itself in the low dose animals after 3 hr, whereas in the high dose group, cardiac output continued to decline.
  • (4) 5-HT thus appears to be the preferred substrate for uptake into platelets and for movement from cytoplasm to vesicles.
  • (5) CT appears to yield important diagnostic contribution to preoperative staging.
  • (6) Disease stabilisation was associated with prolonged periods of comparatively high plasma levels of drug, which appeared to be determined primarily by reduced drug clearance.
  • (7) The rash presented either as a pityriasis rosea-like picture which appeared about three to six months after the onset of treatment in patients taking low doses, or alternatively, as lichenoid plaques which appeared three to six months after commencement of medication in patients taking high doses.
  • (8) The angiographic appearances are highly characteristic and equal in value to a histological diagnosis.
  • (9) Slager’s next court appearance is not until 21 August.
  • (10) Cellulase regulation appears to depend upon a complex relationship involving catabolite repression, inhibition, and induction.
  • (11) The process of sequence rearrangement appears to be a significant part of the evolution of the genome and may have a much greater effect on the evolution of the phenotype than sequence alteration by base substitution.
  • (12) In Patient 2 they were at first paroxysmal and unformed, with more prolonged metamorphopsia; later there appeared to be palinoptic formed images, possibly postictal in nature.
  • (13) In dogs, cibenzoline given i.v., had no effects on the slow response systems, probably because of sympathetic nervous system intervention since the class 4 effects of cibenzoline appeared after beta-adrenoceptor blockade.
  • (14) The various evocational changes appear to form sets of interconnected systems and this complex network seems to embody some plasticity since it has been possible to suppress experimentally some of the most universal evocational events or alter their temporal order without impairing evocation itself.
  • (15) Experience of pain is modified by intern and extern influences, and it can appear very multiformly in the chronicity.
  • (16) Coronary arteritis has to be considered as a possible etiology of ischemic symptoms also in subjects who appear affected by typical atherosclerotic ischemic heart disease.
  • (17) A total of 13 ascertainments of folate sensitive autosomal fragile sites is observed, of which 10q23 fragility appears to be the most frequent.
  • (18) However, some contactless transactions are processed offline so may not appear on a customer’s account until after the block has been applied.” It says payments that had been made offline on the day of cancellation may be applied to accounts and would be refunded when the customer identified them; payments made on days after the cancellation will not be taken from an account.
  • (19) Sample processing appears effective in avoiding spontaneous oxalogenesis.
  • (20) The epididymis appeared distended but without any visible sperms.

Disappear


Definition:

  • (v. i.) To cease to appear or to be perceived; to pass from view, gradually or suddenly; to vanish; to be no longer seen; as, darkness disappears at the approach of light; a ship disappears as she sails from port.
  • (v. i.) To cease to be or exist; as, the epidemic has disappeared.

Example Sentences:

  • (1) Tryptic digestion of the membranes caused complete disappearance of the binding activity, but heat-treatment for 5 min at 70 degrees C caused only 40% loss of activity.
  • (2) For male schizophrenics, all symptom differences disappeared except one; blacks were more frequently asocial.
  • (3) In early 2000, during the first months of Vladimir Putin’s presidency, Babitsky was kidnapped by Russian forces and disappeared for many weeks.
  • (4) A disease in an IgD (lambda) plasmocytoma is described, where after therapy with Alkeran and prednisone a disappearance of all clinical and laboratory findings indicating an activity could be observed.
  • (5) However, this predictive value disappeared when five baseline parameters found to predict the outcome (neopterin, beta 2-microglobulin, p24 antigen, anti-p18 antibody and immunoglobulin A) were adjusted.
  • (6) External phonocardiography performed at the time of cardiac catheterization revealed that this loud midsystolic click disappeared whenever a catheter was positioned across the mitral valve.
  • (7) (ii) A progressive disappearance of the immunoreactive hypendymal cells.
  • (8) The disappearance of the herbicide, Avadex (40% diallate), from five agricultural soils (differing in either pH, carbon content, or nitrogen content), incubated under sterile and non-sterile conditions, was followed for a period of 20 weeks.
  • (9) There was a highly significant relationship between the two tests, r = 0.88, P less than 0.001, although the uptake method gave consistently higher results than those obtained from plasma disappearance.
  • (10) Label was found widely distributed among all the organs except the nervous system and its rate of disappearance from the tissues paralleled its disappearance from the circulation.
  • (11) Transient intermediates were distinguished from dead-end metabolites by the rapid formation and disappearance of the former.
  • (12) There is no convincing evidence that immunosuppression is effective, also because the natural history of the disease is characterised by a spontaneous disappearance of the factor VIII-C inhibitor.
  • (13) In one case an infection of the axillary region developed, which disappeared after removal of the catheter without any consequences.
  • (14) 3 patients had complete disappearance of the symptoms but did not have a computed tomography scanning control, 3 patients had clinical and CT recovery.
  • (15) Radiographic examination revealed that three of the cysts had increased is size, three had decreased in size, three had not changed in size, and two had disappeared; no evaluation could be made on two.
  • (16) The disappearance of ribosomes in Escherichia coli cells starved for a carbon source was studied.
  • (17) In this paper the domain of validity of the unlabelled and labelled minimal models of glucose disappearance is studied.
  • (18) They disappear after Leydig cell depletion induced by ethanedimethane sulphonate (EDS) and return after testosterone treatment.
  • (19) Hepatic glucose production increased only transiently and there was no significant change in glucose disappearance or plasma glucose concentrations.
  • (20) The disappearance of the bruit was associated with poor renal function.