- Also called period of rotation. the time in which a body rotates once on its axis.
- Also called period of revolution. the time in which a planet or satellite revolves once about its primary.
Origin of period
Definition for period (2 of 2)
- characterized by a series of successive circuits or revolutions, as the motion of a planet or satellite.
- of or relating to a period, as of the revolution of a heavenly body.
Examples from the Web for period
The detectives are still at it, seeking to account for a period of time when Brinsley may well have paused to sit somewhere.
The idea that January 1st initiates a period of new beginning is not a flash of Hallmark brilliance.
Over the years, the meaning has evolved, essentially, to “Christmastime,” and describes the period between Dec. 24 and Jan. 6.The Most Confusing Christmas Music Lyrics Explained (VIDEO)|Kevin Fallon|December 24, 2014|DAILY BEAST
Like Lent, the season of Advent was a period of reflection and fasting, and items such as dairy and sugar were forbidden.One Cake to Rule Them All: How Stollen Stole Our Hearts|Molly Hannon|December 24, 2014|DAILY BEAST
The biggest blowback will be against the ‘reforming’ Kentucky senator, because Republicans back cops, period.
It was during this period of her life that she won a friendship quite as strong and quite as precious as that of old Grossetete.The Village Rector|Honore de Balzac
In the 12th century the same gospels were again copied by pious hands into the Kentish dialect of the period.
The son at this period would have awoke him, but he became more composed, for a time, and enjoyed apparently a refreshing sleep.Fardorougha, The Miser|William Carleton
At that period the father of the present owner was still living, and for sundry reasons had the greatest confidence in me.The Freebooters|Gustave Aimard
In the last year of this period the pattern post was established.The Life of Sir Rowland Hill, Vol. II (of 2)|Rowland Hill
British Dictionary definitions for period (1 of 2)
- a portion of time specified in some waythe Arthurian period; Picasso's blue period
- (as modifier)period costume
- the time taken to complete one cycle of a regularly recurring phenomenon; the reciprocal of frequencySymbol: T
- an interval in which the values of a periodic function follow a certain pattern that is duplicated over successive intervalssin x = sin ( x + 2π ), where 2π is the period
- the time required by a body to make one complete rotation on its axis
- the time interval between two successive maxima or minima of light variation of a variable star