(n.) A clock, watch, or other chronometer; a timepiece.
(n.) A person who keeps, marks, regulates, or determines the time.
(n.) A person who keeps a record of the time spent by workmen at their work.
(n.) One who gives the time for the departure of conveyances.
(n.) One who marks the time in musical performances.
(n.) One appointed to mark and declare the time of participants in races or other contests.
Example Sentences:
(1) This report has focused on the actions of melatonin and how it serves as a timekeeping hormone in the seasonal reproductive process of the ewe.
(2) The period variances of the right and left systems in the 162 instances of absolute coordination were analysed according to a method that assumes that a timekeeper function and a motor implementation function contribute independently to the variance in the periodic timing of a rhythmic movement.
(3) The jobcentre supervisor told the man that his poor timekeeping had become an issue and put him at risk of being "sanctioned".
(4) These results indicate that separate mechanisms are involved in transducing temporal cues from LD and EF cycles in the circadian timekeeping system of these nonhuman primates.
(5) In addition, these rhythms are either interdependent or subject to the same maternal timekeeping mechanism, supporting the hypothesis that the exact time of the day at which birth occurs in the rhesus monkey depends on the maternal circadian system.
(6) These age-related changes are similar to those that characterize photically entrained circadian rhythms and suggest that both components of the rat's multioscillatory circadian timekeeping system deteriorate in parallel over the life span.
(7) Pharmacological manipulations with or without the addition of lighting strategies have been used to analyze the neurochemistry of circadian timekeeping.
(8) Since Fos expression within the SCN oscillates in the absence of photoperiodic time cues and since the peak of this oscillation coincides with the circadian times when light modulates the periodicity of the SCN pacemaker, these data provide further evidence that expression of the c-fos gene may be a molecular signal in the circadian timekeeping mechanism in the SCN and its regulation by photic stimuli.
(9) Musical compositions too apparently evolved originally as a timekeeping device.
(10) It is suggested that cell-cycle timing, by counting subcycles in growing cells, may become dominated by circadian control in slowly growing natural populations and that the same subcycles may be used for circadian timekeeping.
(11) We haven’t got an outstanding candidate for captain and that is a worrying sign.” Asked about Wayne Rooney , who is vying with Robin van Persie to be named United captain by the new manager Louis van Gaal, Robson, speaking at an event in Los Angeles hosted by Bulova (Manchester United’s official timekeeper), said: “You look at it and it is a difficult one.
(12) These results suggest a timekeeping role for social cues for timing onset of the breeding season in an animal that normally relies on photoperiodic signals for temporal regulation of the seasonal reproductive cycle.
(13) This striking uniformity indicates good timekeeping.
(14) The experimental approach presented in this paper is useful because it allows systematic assessment and distinction of the input, pacemaker, and output components of a mammalian circadian timekeeping system in vivo.
(15) The precision of timekeeping is measured by the extent to which embryos, within an initially synchronous population, come to diverge in the course of their development.
(16) The lower the variation the better the timekeeping.
(17) Separable estimates of a central timekeeper component and an implementation component were derived from the total variability scores following a model developed by Wing and Kristofferson (1973).
(18) This has enabled the formulation of strategies for treatment of patients with manic depressive illness and certain sleep disorders in which disorders of circadian timekeeping may be fundamental.
(19) Eventually, Charles Moore, then the paper's editor, lost patience with Johnson's timekeeping and didn't print his column.
(20) The second type of timekeeping involves time-to-flowering.
Timer
Definition:
(n.) A timekeeper; especially, a watch by which small intervals of time can be measured; a kind of stop watch. It is used for timing the speed of horses, machinery, etc.
Example Sentences:
(1) After a fairly competitive first set, it turned into a rout almost on the scale of the triple-bagle thrashing the Scot gave the Luxembourg part-timer Laurent Bram when he returned to Davis Cup action in Glasgow four years ago.
(2) However, an increasing body of experts argues something must be done to arrest disengagement by winning over this so-called Generation Y, born after 1982, who are predicted to be poorer than their parents, and according to Ipsos Mori research, have a record low level of trust in their fellow man.Guy Lodge, of the IPPR thinktank, makes the case for an even more radical solution – compulsory voting for first-timers.
(3) The regulation of these two enzymes was found to be dissociable in the developmental timer mutant, FM-1, which aggregates 4.5 h earlier than wild-type cells due to the absence of the first rate-limiting component of the preaggregative period.
(4) It was wired with a mobile phone, most likely to act as a timer to detonate the device.
(5) We go on holiday ... We all worked together at Conservative Central Office ... all this 'bright young thing' stuff obscures the fact that we are actually old-timers."
(6) Since hydrolytic demidation has been suggested as an important timer of biological events, the effects on hydrolytic deamidation of substances that are normally present in living organisms and are subject to nutritional control are of special relevance.
(7) The data indicate that both first timers and repeaters overwhelmingly reject the premise that abortion is a primary or even a back-up birth control method.
(8) A built-in timer-reset mechanism prevents failure of the system in the absence of a His potential (i.e., 2:1 AV block).
(9) But many first-timers will be spurred into buying by the looming end of the stamp duty holiday .
(10) The number of reserves is due to double over this period, but Hammond and the head of the army, General Sir Peter Wall, acknowledged laws protecting part-timers, and the companies they work for, will have to be revisited.
(11) While the 10 councils have been working together since the mid-1980s the authority has only legally existed for three years – although by the standards of CCGs that makes it an old-timer.
(12) Zeitlin, the only American to win a major prize, explained that nearly all his cast and crew were first-timers too: "We were a lot of inexperienced people running fast into the unknown."
(13) Significance of this mechanism is emphasized not only for the GIT activity but as a "timer" for ultraradian rhythms as well.
(14) It is concluded that the best type of mechanical plethysmography is plethysmography with the use of a mercuric timer; in addition, mechanical plethysmography compares very favourably with impedance one.
(15) Two of my cellmates are first-timers, ordinary young men without an atom of violence in them.
(16) A digital timer is described which generates a number of pulses whose delays with respect to a periodic reference pulse can be independently preset by means of thumbwheel switches.
(17) This method has been used to check and evaluate timers on 10 X-ray examination units of various models.
(18) A fully automated system is described in which a gas chromatograph equipped with a backflush valve is automatically operated under the control of a specially designed timer unit.
(19) Many universities have barely noticed the fall in part-timers because of increased revenue from their mainly full-time student intakes.
(20) Five variables were independently associated with greater than 80% compliance as determined by stepwise multiple logistic regression: patient belief that zidovudine prolongs life (odds ratio [OR] 9.3, [95% confidence interval (CI) 2.4, 36.7]), a diagnosis of AIDS or ARC (OR 5.5, [CI 1.5, 20.4]), use of a medication timer (OR 4.4, [CI 1.0, 19.1]), no history of intravenous drug use (OR 3.7, [CI 1.0, 14.2]), and taking one to three other medications with zidovudine.