Which word is a synonym for regulate in this sentence: They based their calendars on three natural cycles: the solar day, marked by the successive periods of light and darkness as the earth rotates on its axis

Which word is a synonym for orbit in this sentence: They based their calendars on three natural cycles: the solar day, marked by the successive periods of light and darkness as the earth rotates on its axis; the lunar month, following the phases of the moon as it orbits the earth; and the solar year, defined by the changing seasons that accompany our planet's revolution around the sun.

Which word is a synonym for accompany in this sentence: They based their calendars on three natural cycles: the solar day, marked by the successive periods of light and darkness as the earth rotates on its axis; the lunar month, following the phases of the moon as it orbits the earth; and the solar year, defined by the changing seasons that accompany our planet's revolution around the sun.

Which word is a synonym for artificial in this sentence: Before the invention of artificial light, the moon had greater social impact.

Which word is a synonym for conspicuous in this sentence: And, for those living near the equator in particular, its waxing and waning was more conspicuous than the passing of the seasons.

Which word is a synonym for crucial in this sentence: In more northern climes, however, where seasonal agriculture was practised, the solar year became more crucial.

Which word is a synonym for formulate in this sentence: Centuries before the Roman Empire, the Egyptians had formulated a municipal calendar having 12 months of 30 days, with five days added to approximate the solar year.

Which word is a synonym for municipal in this sentence: Centuries before the Roman Empire, the Egyptians had formulated a municipal calendar having 12 months of 30 days, with five days added to approximate the solar year.

Which word is a synonym for interval in this sentence: The cosmic significance the Egyptians placed in the 12 decans led them to develop a system in which each interval of darkness (and later, each interval of daylight) was divided into a dozen equal parts.

Which word is a synonym for adopt in this sentence: Temporal hours, which were first adopted by the Greeks and then the Romans, who disseminated them through Europe, remained in use for more than 2,500 years.

Which word is a synonym for disseminate in this sentence: Temporal hours, which were first adopted by the Greeks and then the Romans, who disseminated them through Europe, remained in use for more than 2,500 years.

Which word is a synonym for track in this sentence: In order to track temporal hours during the day, inventors created sundials, which indicate time by the length or direction of the sun's shadow.

Which word is a synonym for counterpart in this sentence: The sundial's counterpart, the water clock, was designed to measure temporal hours at night.

Which word is a synonym for drip in this sentence: One of the first water clocks was a basin with a small hole near the bottom through which the water dripped out.

Which word is a synonym for denote in this sentence: The falling water level denoted the passing hour as it dipped below hour lines inscribed on the inner surface.

Which word is a synonym for dip in this sentence: The falling water level denoted the passing hour as it dipped below hour lines inscribed on the inner surface.

Which word is a synonym for inscribe in this sentence: The falling water level denoted the passing hour as it dipped below hour lines inscribed on the inner surface.

Which word is a synonym for satisfactorily in this sentence: Although these devices performed satisfactorily around the Mediterranean, they could not always be depended on in the cloudy and often freezing weather of northern Europe.

Which word is a synonym for arise in this sentence: With these, however, arose the question of when to begin counting, and so, in the early 14th century, a number of systems evolved.

Which word is a synonym for evolve in this sentence: With these, however, arose the question of when to begin counting, and so, in the early 14th century, a number of systems evolved.

Which word is a synonym for evolve in this sentence: The schemes that divided the day into 24 equal parts varied according to the start of the count: Italian hours began at sunset, Babylonian hours at sunrise, astronomical hours at midday and 'great clock' hours, used for some large public clocks in Germany, at midnight.

Which word is a synonym for divide in this sentence: The schemes that divided the day into 24 equal parts varied according to the start of the count: Italian hours began at sunset, Babylonian hours at sunrise, astronomical hours at midday and 'great clock' hours, used for some large public clocks in Germany, at midnight.

Which word is a synonym for supersede in this sentence: Eventually these were superseded by 'small clock', or French, hours, which split the day into two 12-hour periods commencing at midnight.

Which word is a synonym for commence in this sentence: Eventually these were superseded by 'small clock', or French, hours, which split the day into two 12-hour periods commencing at midnight.

Which word is a synonym for descend in this sentence: The revolutionary aspect of this new timekeeper was neither the descending weight that provided its motive force nor the gear wheels (which had been around for at least 1,300 years) that transferred the power; It was the part called the escapement.

Which word is a synonym for precise in this sentence: The motion of a pendulum rocks this device so that it catches and then releases each tooth of the escape wheel, in turn allowing it to turn a precise amount.

Which word is a synonym for original in this sentence: Unlike the original form used in early pendulum clocks, the anchor escapement permitted the pendulum to travel in a very small arc.

Which word is a synonym for permit in this sentence: Unlike the original form used in early pendulum clocks, the anchor escapement permitted the pendulum to travel in a very small arc.

Which word is a synonym for accurate in this sentence: Today, highly accurate timekeeping instruments set the beat for most electronic devices.

Which word is a synonym for calibrate in this sentence: Moreover, not only do time signals beamed down from Global Positioning System satellites calibrate the functions of precision navigation equipment, they do so as well for mobile phones, instant stock-trading systems and nationwide power-distribution grids.

Which word is a synonym for precision in this sentence: Moreover, not only do time signals beamed down from Global Positioning System satellites calibrate the functions of precision navigation equipment, they do so as well for mobile phones, instant stock-trading systems and nationwide power-distribution grids.

Which word is a synonym for integral in this sentence: So integral have these time-based technologies become to day-to-day existence that our dependency on them is recognised only when they fail to work.

Which word is a synonym for dependency in this sentence: So integral have these time-based technologies become to day-to-day existence that our dependency on them is recognised only when they fail to work.