s-period
71Period 2 element — A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… …
72Period 1 element — A period 1 element is one of the chemical elements in the first row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… …
73Period (number) — In mathematics, a period is a number that can be expressed as an integral of an algebraic function over an algebraic domain. The concept has been promoted by Maxim Kontsevich and Don Zagier.In elementary mathematics each group of three digits in… …
74period — pe•ri•od [[t]ˈpɪər i əd[/t]] n. 1) an extent of time that is meaningful in the life of a person, in history, etc.: a period of illness; a period of social unrest[/ex] 2) a specific division or portion of time: the postwar period[/ex] 3) a round… …
75period — n. & adj. n. 1 a length or portion of time (showers and bright periods). 2 a distinct portion of history, a person s life, etc. (the Georgian period; Picasso s Blue Period). 3 Geol. a time forming part of a geological era (the Quaternary period) …
76period of time — noun an amount of time (Freq. 7) a time period of 30 years hastened the period of time of his recovery Picasso s blue period • Syn: ↑time period, ↑period • Hypernyms: ↑ …
77Period-doubling bifurcation — In mathematics, a Period doubling bifurcation in a dynamical system is a bifurcation in which the system switches to a new behavior with twice the period of the original system. The hallmark of this is a Floquet multiplier of 1. ExampleConsider… …
78Period-after-opening symbol — The period after opening symbol or PAO symbol is a graphic symbol that identifies the useful lifetime of a cosmetics product after its package has been opened for the first time. It depicts an open cosmetics pot and is used together with a… …
79Period prevalence — In epidemiology, Period prevalence is the proportion of the population with a given disease or condition over a specific period of time. It could describe how many people in a population had a cold over the cold season in 2006, for example.It is… …
80period — 01. Living in Berlin during the [period] when the Berlin Wall was torn down was an unforgettable experience. 02. Meetings will be held [periodically] for the members of the project to discuss their progress. 03. The police have been making… …
