What's the difference between indefinite and uncertain?

Indefinite


Definition:

  • (a.) Not definite; not limited, defined, or specified; not explicit; not determined or fixed upon; not precise; uncertain; vague; confused; obscure; as, an indefinite time, plan, etc.
  • (a.) Having no determined or certain limits; large and unmeasured, though not infinite; unlimited; as indefinite space; the indefinite extension of a straight line.
  • (a.) Boundless; infinite.
  • (a.) Too numerous or variable to make a particular enumeration important; -- said of the parts of a flower, and the like. Also, indeterminate.

Example Sentences:

  • (1) At present, anyone can bring a legal action for an indefinite period over a posted article.
  • (2) Comparing measurements of base line and 30 and 60% of Pmmax indicated that the degree of asynchrony, paradox, and variation in compartmental contribution were significantly related to the level of the load; significant abnormalities were observed at even 30% of Pmmax, a target pressure that can be sustained indefinitely.
  • (3) In contrast, administration of anti-Lyt-2 mAb alone (MST = greater than 47 days) or together with anti-L3T4 mAb (MST = greater than 50 days) caused prolonged or indefinite graft survival in all recipient mice.
  • (4) Government officials drew the public’s ire after charging Manning with three counts of misconduct following the suicide attempt, including two which carried possible penalties of indefinite solitary confinement.
  • (5) The authors insist on the interest of the latter prosthesis, made concurrently, easily and solidly fixed, and immediately and indefinitely well tolerated.
  • (6) It is concluded that maintenance treatment of ulcerative colitis with sulphasalazine should be continued indefinitely unless contraindicated by side effects.
  • (7) Explicit expressions are derived which describe the binding of a univalent ligand to equivalent and independent sites on each state of an acceptor undergoing indefinite self-association that is governed by an isodesmic equilibrium constant KI.
  • (8) Upon infection with the adenovirus 12-simian virus 40 hybrid virus, primary human epidermal keratinocytes acquired an indefinite life span in culture but did not undergo malignant conversion.
  • (9) It stores up a problem: you can spread staff thinner for a short period of time but unless there is a managed staff restructuring a department could struggle to ask colleagues to fill in indefinitely.
  • (10) Concomitant administration of ART-18 and ART-65 to recipient animals in relatively low doses exerted a strikingly synergistic effect, with 30% of the transplants surviving indefinitely and 50% undergoing late rejection over 50 d. These studies provide evidence that anti-IL-2-R mAbs selectively spare phenotypically distinct T cells with suppressor functions.
  • (11) IHMS appears complicit in plans to detain children and adolescents on Christmas Island long term (indefinitely),” the doctors write.
  • (12) Since these cells are of indefinite origin, there is no way to predict which HCO3- transporting system is operable in these cells and, hence, what effect HCO3- will have on the pHin and the response of pHin to mitogens.
  • (13) Acid fast rods, constituting chemoautotrophic nocardioform bacteria, could be repeatedly cultivated and isolated and propagated indefinitely in vitro from fish actinomycotic macrophage granuloma from the massive epizootics of ulcerative disease syndrome of fish in eastern India during 1988-90.
  • (14) The other patient may use this technique indefinitely.
  • (15) With appropriate management, androgen levels can be maintained within the normal range indefinitely.
  • (16) Statistical analysis of an accelerated storage test by extrapolation of viral degradation indicates that the lyophilized viruses are stable indefinitely at or below room temperature.
  • (17) It is concluded that, at the present time, antibiotic coverage for an indefinite period of time may be indicated for surgically or functionally asplenic patients.
  • (18) I think it’s unlikely that they have an H-bomb at the moment, but I don’t expect them to keep testing basic devices indefinitely, either,” said Jeffrey Lewis of the California-based Middlebury Institute of International Studies at Monterey.
  • (19) Reduced CCT was found in chronic degenerations of leutic, tuberculous or indefinite nature.
  • (20) We consider that the long-term use of topical mechlorethamine may be a safe form of therapy, but that a continuous indefinite follow-up of patients on this medication should be mandatory.

Uncertain


Definition:

  • (a.) Not certain; not having certain knowledge; not assured in mind; distrustful.
  • (a.) Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze.
  • (a.) Questionable; equivocal; indefinite; problematical.
  • (a.) Not sure; liable to fall or err; fallible.
  • (a.) To make uncertain.

Example Sentences:

  • (1) However, the mechanism of the inhibitory action is still somewhat uncertain.
  • (2) Of course the job is not done and we will continue to remain vigilant to all risks, particularly when the global economic situation is so uncertain,” the chancellor said in a statement.
  • (3) The functional significance of these early changes in the nodal region is uncertain.
  • (4) Preservation of dopaminergic and H1 neurotransmission, probably within the blood barrier, is needed to allow the neuroendocrine transduction of cholinergic inputs, whereas the role of 5-HT neurotransmission remains uncertain.
  • (5) The nature of these infiltrative foci remains uncertain; however, they are unlikely to have been of neoplastic origin and may be due to interleukin-2-induced lymphocytic infiltration.
  • (6) Whether or not any alteration in disease progression will accrue from demonstrated local downstaging is, of course, uncertain.
  • (7) Similarly, it appears that acute hydronephrosis or worsening of an existing hydronephrosis has been somewhat overlooked as a possible cause of uncertain abdominal pain during pregnancy.
  • (8) In 11 patients, the electrophysiological mechanism remained uncertain.
  • (9) The nature of the cystatin C-immunoreactive substance in some of these vascular lesions is uncertain, but it might conceivably play an additional important role in the pathogenesis of brain hemorrhage in these cases.
  • (10) The mechanism of action is still uncertain but it is believed by some workers to be similar to that of a beta-adrenergic stimulator.
  • (11) Assays of drug levels in blood and of other biochemical characteristics of psychiatric patients are being proposed for clinical application, although their utility in practice remains uncertain.
  • (12) In 26 patients, including the two reported here, etiology was uncertain (idiopathic aneurysm of the left ventricle) in as much as malformation or an infectious disease might have been the underlying cause.
  • (13) Instead of inevitable defeat there is uncertain cop-out.
  • (14) The aetiology remains at present uncertain and therefore rational therapeutic strategies are difficult to plan.
  • (15) It was concluded that (1) there is a group of patients whose histories of poliomyelitis are uncertain, and (2) the lack of clear evidence for previous denervation after extensive electrodiagnostic testing is a valid means for excluding the diagnosis of postpoliomyelitis syndrome.
  • (16) Although approximately 24,000 adolescents were questioned, the investigations together provide an uncertain picture of the habits as these are not representative for Danish adolescents.
  • (17) McCall said the outlook remained uncertain: “The economic and operating environment remains uncertain, following the high levels of disruption and more recently the UK’s referendum decision to leave the EU, as well as the recent events in Turkey and Nice, which have affected consumer confidence.
  • (18) The significance of this event is uncertain; cleaved NGF demonstrates bioactivity and no function has been attributed to the octapeptide produced (NGF-OP; Ser-Ser-Thr-His-Pro-Val-Phe-His).
  • (19) While the histogenesis of these tumors remain uncertain, it is necessary to recognize that these aggressive neoplasms may occur primarily in the skin.
  • (20) Estimates of the number of eventual TA-AIDS cases to be seen are considerably more uncertain and require additional assumptions about the incubation distribution.