| / English Dictionary |
NIGHTTIME
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The time after sunset and before sunrise while it is dark outside
Synonyms:
Classified under:
Nouns denoting time and temporal relations
Hypernyms ("nighttime" is a kind of...):
period; period of time; time period (an amount of time)
Meronyms (parts of "nighttime"):
evening (the early part of night (from dinner until bedtime) spent in a special way)
late-night hour (the latter part of night)
midnight (12 o'clock at night; the middle of the night)
small hours (the hours just after midnight)
lights-out (a prescribed bedtime)
Hyponyms (each of the following is a kind of "nighttime"):
weeknight (any night of the week except Saturday or Sunday)
wedding night (the night after the wedding when bride and groom sleep together)
Holonyms ("nighttime" is a part of...):
24-hour interval; day; mean solar day; solar day; twenty-four hour period; twenty-four hours (time for Earth to make a complete rotation on its axis)
Context examples:
An abnormal disruption of sleep, such as sleep walking, sleep talking, nightmares, bedwetting, sleep apnea (problems with breathing that cause loud snoring), or nighttime seizures.
(Parasomnia, NCI Dictionary)
The average person's circadian cycle is characterized by a reduction in core body temperature of about 0.5 to 1 F around an hour before usual sleep time, dropping to its lowest level between the middle and later span of nighttime sleep.
(Bathing 90 minutes before bedtime can improve sleep quality, The Titi Tudorancea Bulletin)
Hubble astronomers suggest that powerful winds carry the titanium oxide gas around to the colder nighttime side, where it condenses into crystalline flakes, forms clouds, and precipitates as snow.
(Hubble Observes Exoplanet that Snows Sunscreen, NASA)
The nighttime side is more than 2,000 degrees Fahrenheit cooler, which allows water vapor and clouds to form.
(Hubble Captures Blistering Pitch-Black Planet, NASA)
Researchers recommend limiting screen time, applying screen filters, wearing computer glasses that block blue light, or use anti-reflective lenses to offset the effects of artificial light at nighttime.
(Artificial Light of Digital Devices Lessens Sleep Quality, The Titi Tudorancea Bulletin)
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