Nouns denoting time and temporal relations

half-century
a period of 50 years
 
month
a time unit of approximately 30 days
 
circadian rhythm
a daily cycle of activity observed in many living organisms
 
time slot
a time assigned on a schedule or agenda
 
bedtime
the time you go to bed
 
Dhu'l-Qa'dah
the eleventh month of the Islamic calendar
 
shelf life
the length of time a packaged food or drug will last without deteriorating
 
half-life
the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
 
period
an amount of time
 
rate
a magnitude or frequency relative to a time unit
 
date
the present
 
8 May 1945
the date of Allied victory in Europe, World War II
 
flux
the rate of flow of energy or particles across a given surface
 
gestation period
the period during which an embryo develops (about 266 days in humans)
 
Reconstruction Period
the period after the American Civil War when the southern states were reorganized and reintegrated into the Union; 1865-1877
 
wedding anniversary
the anniversary of the day on which you were married (or the celebration of it)
 
1880s
the decade from 1880 to 1889
 
silver age
(classical mythology) the second age of the world, characterized by opulence and irreligion; by extension, a period secondary in achievement to a golden age
 
end
the point in time at which something ends
 
common year
a year that is not a leap year
 
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