Death is the third from of slip
dormiunt (third person plural form of domio, dormire)
You are "supposed" to sleep 8-hours a day, which is a third of a day. Extending that, you sleep a third of each month, a third of each year, a third of your life. This is all, of course, based on the 8-hours per day sleeping schedule.
about one third
sleep is the base form slept is the past simple form slept is the past participle.
The adverb form of the noun 'sleep' is 'sleepily.'
The third form of the English word "receive" is "received".
The third form of shine is shone.
The third person form of arrive is "arrives."
It is equivalent to 8 hours
about a third
The medical terminology combining form for sleep is "somn/o."