(a.) Proceding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proportion.
(a.) Proceeding from, or acting by, internal impulse, energy, or natural law, without external force; as, spontaneous motion; spontaneous growth.
(a.) Produced without being planted, or without human labor; as, a spontaneous growth of wood.
Example Sentences:
(1) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
(2) Hypothyroidism complicated by spontaneous hyperthyroidism is an interesting but rare occurrence in the spectrum of autoimmune thyroid disorders.
(3) Spontaneous locomotor activity was lower in naloxone-infused rats on day 3 only.
(4) administration of the potent short-acting opioid, fentanyl, elicited inhibition of rhythmic spontaneous reflex increases in vesical pressure (VP) evoked by urinary bladder distension.
(5) Sample processing appears effective in avoiding spontaneous oxalogenesis.
(6) Thus, B cells that grow spontaneously from the peripheral blood of SS patients spontaneously produce a B-cell growth factor.
(7) They can rarely be detected spontaneously but most often are provoked.
(8) The ACTH deficiency recovered spontaneously, with normal cortisol responses to depot Synacthen (greater than 1380 at 6 h) and hypoglycemia (peak, 590) 14 and 18 months postpartum, respectively.
(9) The number of peripheral blood lymphocytes (PBL) producing IgM (spontaneous and pokeweed mitogen (PWM) stimulated) at the end of a seven day culture period was similar in PBC patients and control subjects while the amount of IgM synthesized (spontaneous and PWM stimulated) during this period was significantly greater in the patient group, implying that the amount of IgM produced per B cell was increased in PBC.
(10) In in vitro preparations GABA (10(-7) - 10(-3) M) elicited a dose-dependent relaxation; a decrease in the spontaneous contractions was sometimes observed.
(11) Fractures which occur near the base of the dens have a low propensity to unite spontaneously.
(12) The cell fermentation culture with a stabilized pH value was better than the culture with the pH value changing spontaneously on saponin content, growth rate and biomass.
(13) Recovery was spontaneous and no antimicrobial agents were required.
(14) Over a period of 9 months a 12-year-old girl spontaneously developed a palpable cystic tumor in the upper eye lid which led to an indentation and downward displacement of the globe.
(15) In the dark the 6-azidoflavoproteins are quite stable, except for L-lactate oxidase, where spontaneous conversion to the 6-amino-FMN enzyme occurs slowly at pH 7.
(16) Spontaneous reports of suspected adverse reactions may be the only way of revealing very rare events but they present great difficulties of rational interpretation.
(17) In addition, spontaneous platelet aggregation is increased when vegetations are present on cardiac valves.
(18) Media made hyperosmotic with sucrose increase the frequency of spontaneously released quanta of transmitter, or miniature excitatory postsynaptic potentials (MEPSPs).
(19) 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.
(20) By contrast, the concentrations of IgA1 kappa and IgA1 lambda in PBMC culture supernatants, both spontaneous and PWM-stimulated, were identical in patients and controls.
Unbidden
Definition:
(a.) Not bidden; not commanded.
(a.) Uninvited; as, unbidden guests.
(a.) Being without a prayer.
Example Sentences:
(1) Sometimes, to manage the images that come unbidden, I force myself to picture my parents copulating in intricate patterns, summoning the image in sets of eight, for so long that looking at them makes me nauseated."
(2) The gestures and facial tics – both bidden and unbidden – have supplied further clues to what is in store when Ratko Mladic's defence against charges of genocide, crimes against humanity and breaches of the laws and customs of war gets under way.
(3) Where is the entertainer who, quite unbidden, will lead us out of the woods toward a better tomorrow - all the while bravely refusing to compromise their ineffable cool by removing their sunglasses?
(4) If they happen to get rich, and make their friends rich in the process, that is just the unbidden consequence of wealth being the natural reward of the righteous, in their moral universe.
(5) "Every time the camera cuts to Marcello Lippi looking nonplussed, the phrase 'First as tragedy, then as farce' pops unbidden into my brain," writes Scott W. "Just me?"
(6) But, hey, mind that you edit out the Satanic-voiced cackle that appears unbidden at the song's end.
(7) I thought it would be adding paraffin to a fire that had gone on too long already.” And does she blush slightly when she meets the PM now, those uncommonly luxuriant trousers floating, unbidden, into her mind?
(8) Just as at funerals, gazing on the coffin, unbidden thoughts about one’s own death mingle with sorrow for the dear dead friend, so it was that, at the Guardian editorial meeting’s minute of silence the next day, I doubt I was the only one imagining for a fleeting second masked gunmen bursting in with Kalashnikovs and mowing us all down – unworthy but human.
(9) How do you get to such a remove, expecting an unbidden fondle to be answered by anything other than complaint, a discharge of spit, the justified twisting and breaking of your fingers?
(10) The signs and symptoms of response to a stressful life event are expressed in two predominant phases: the intrusive state, characterized by unbidden ideas and feelings and even compulsive actions, and the denial state, characterized by emotional numbing and constriction of ideation.
(11) The stage directions may say benign and caring, but in repose his face turns unbidden into that default snarl.
(12) Patients can be taught self-hypnosis techniques that allow them to work through traumatic memories and thereby reduce spontaneous unbidden intrusive recollections.
(13) One female member in Pennsylvania posted that she went jogging after the election and passed a group of workmen, one of whom yelled: “We own your pussy now” – a reference to the audio tape that surfaced during the campaign of then candidate Trump boasting about grabbing women, unbidden, by the genitals.
(14) Sensible advice The more-or-less-coping majority, meanwhile, are far less reluctant to seek out advice and support than the media warnings of a nanny state encroaching unbidden into the nation's living rooms would imply, he insists.