What's the difference between once and thrice?

Once


Definition:

  • (adv.) By limitation to the number one; for one time; not twice nor any number of times more than one.
  • (adv.) At some one period of time; -- used indefinitely.
  • (adv.) At any one time; -- often nearly equivalent to ever, if ever, or whenever; as, once kindled, it may not be quenched.

Example Sentences:

Thrice


Definition:

  • (adv.) Three times.
  • (adv.) In a threefold manner or degree; repeatedly; very.

Example Sentences:

  • (1) In a short-term cross-over study the effect of daily sc human growth hormone was compared with that of thrice weekly im treatment.
  • (2) In the second study 8 subjects received placebo or terbutaline 750 micrograms thrice daily for 14 days.
  • (3) After the acute bleeding period, all Group P and Group S ewes were commingled and exposed to a ram continuously for 42 d. Samples of serum were collected thrice weekly and analyzed for progesterone to monitor ovulatory response to ram introduction through the 42-d period.
  • (4) During a period of three years each scintigraphy was classified thrice as a consensus between two experienced observers at six occasions placed on three separate days.
  • (5) The patient used Premarin vaginal cream (1 gm thrice weekly) for 7 months before the cancer was diagnosed.
  • (6) A cross-over study carried out over a 24 week period during 1975-76 was designed to test the relative merits of Extracorporeal versus Travenol coils for thrice weekly short periods of haemodialysis for patients with end-stage renal failure.
  • (7) When applied topically to the skin twice at a 48-h interval or thrice at 24-h intervals, 17 nmol of 12-O-tetradecanoylphorbol-13-acetate (TPA) and 0.2 mumol of A23187 or ionomycin induce the same 3-fold increases of hydroperoxide (HPx) production in mouse epidermis.
  • (8) Thirty-two women with recurrent urinary tract infections were treated after eradication of existing infections with a mixture of 40 mg of trimethoprim and 200 mg of sulfamethoxazole thrice weekly at bedtime for six months.
  • (9) In the latter the incidence of the operative wound suppuration was observed thrice as frequently.
  • (10) injections twice or thrice weekly of human growth hormone (hGH; Crescormon Kabi Vitrum), participated in a prospective study.
  • (11) 42 patients were randomly assigned to receive either intranasal buserelin, preceded by a short period of subcutaneous injections (500 micrograms thrice daily for 10 days) or subcutaneous goserelin.
  • (12) Mupirocin or placebo were applied in both anterior nares thrice daily for 2 weeks and subsequently three times weekly for a total of 9 months.
  • (13) Haemodynamic studies at rest and during exercise together with radionuclide ventriculography, pulmonary function and clinical well-being assessment were evaluated in ten patients with COPD and secondary pulmonary hypertension (mean PAP 25 mm Hg), before and after 6 months therapy with pirbuterol 20 mg thrice daily.
  • (14) The exercise consisted of thrice weekly sessions at 70% VO2max for 20 minutes plus warmup and cool down.
  • (15) Diabetes mellitus incidence in non-tumor cases was thrice (13.73%) that in cancer patients older than 54 years (4.15%).
  • (16) After a thrice weekly exposure to oxygen radicals for 4 and 5 weeks, there was a significant number of transformants compared to controls.
  • (17) It was concluded that 50 mg or 100 mg twice-daily therapy was equally as effective as the 50 mg thrice daily regimen previously recommended and that the tolerability of ketoprofen was not adversely affected by this concentration of the daily requirement.
  • (18) A girl aged 2 years and 10 months repeatedly suffered viral (thrice) and bacterial (colitis, salmonellosis, pneumonia 6 times) infections.
  • (19) Thus, low-dose INF-alpha 2b given thrice weekly might be as effective as daily treatment with higher dosages.
  • (20) However, these various Ca2+ ionophore treatments mimic entirely the stimulatory effects of TPA on epidermal DNA synthesis at 16 h and produce from 30 to 70% of the DNA responses to TPA at 32 h. Interestingly, the Ca2+ ionophore and TPA treatments applied thrice at 24-h intervals still produce above maximal or submaximal DNA responses, in spite of their very weak ODC-inducing activities or refractoriness against ODC induction.

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