clepsydra
noun[C]
uk/ˈklep.sɪ.drə/us/ˈklep.sɪ.drə/pluralclepsydraeuk/ˈklep.sɪ.driː/us/ˈklep.sɪ.driː/clepsydrasin the past, adeviceformeasuringtimeusing aflowofwater:
（旧时利用水流计时的）漏壶，水钟The mostaccuratetimekeepingdeviceof theancientworldwas the waterclock or clepsydra, firstfoundin Egypt.古代世界最准确的计时装置是水钟或漏壶，最早出现在埃及。
a clepsydra ofshiningbronze闪亮的青铜漏壶
Synonym
water clock
- Empedocles'theoryofrespirationisremarkablefor the use of anextendedanalogywith a clepsydra (waterclock).
- Waterclocks, alsoknownas clepsydrae, along withsundials, arepossiblytheoldesttime-measuringinstruments.
- Toprovideameansofmeasuringtimeatnightthe Egyptians alsoinventedthe water-clock, or "clepsydra" as the Greekslatercalled it.
- Awaterclockor clepsydra is anytimekeeperoperatedbymeansof aregulatedflowofliquid.
Watches & clocks
- 24-hour clock
- against the clockidiom
- alarm
- alarm clock
- at/on the stroke ofsomethingidiom
- atomic clock
- clock
- horology
- hour hand
- hourglass
- jewel
- military time
- minute hand
- movement
- stroke
- timekeeper
- timepiece
- turn the clocks backphrase
- twenty-four-hour clock
- watchband