English Lexicon

Sleep Duration

/sliːp dɪˈjʊə.ʃən/
nounCEFR B2 (Upper)Top #1500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The total amount of time spent sleeping during a given period, typically measured in hours.

    "A good sleep duration is essential for maintaining overall health and well-being."
  2. 2

    The length of time between the onset of sleep and the final awakening.

    "Studies show that sleep duration can significantly affect cognitive performance."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'sleep' originates from Old English 'slæpan', which is related to the Proto-Germanic '*slēpaną'. 'Duration' comes from the Latin 'duratio', meaning 'to last', which evolved through Middle French before entering English in the late 14th century. The combination reflects the length of time spent in a state of sleep.

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