noun. An interval of time characterized by the occurrence of a certain condition, event, or phenomenon.

noun. An interval of time characterized by the prevalence of a specified culture, ideology, or technology.

noun. An interval regarded as a distinct evolutionary or developmental phase.

noun. A unit of time, longer than an epoch and shorter than an era.

noun. Any of various arbitrary units of time, especially.

noun. Any of the divisions of the academic day.

noun. A division of the playing time of a game.

noun. The time interval between two successive occurrences of a recurrent event or phases of an event; a cycle.

noun. undefined

noun. A point or portion of time at which something is ended; a completion or conclusion.

noun. A punctuation mark ( . ) indicating a full stop, placed at the end of declarative sentences and other statements thought to be complete, and after many abbreviations.

noun. The full pause at the end of a spoken sentence.

noun. A sentence of several carefully balanced clauses in formal writing.

noun. undefined

noun. A metrical unit of quantitative verse consisting of two or more cola.

noun. An analogous unit or division of classical Greek or Latin prose.

noun. A group of two or more phrases within a composition, often made up of 8 or 16 measures and terminating with a cadence.

noun. undefined

noun. The least interval in the range of the independent variable of a periodic function of a real variable in which all possible values of the dependent variable are assumed.

noun. A group of digits separated by commas in a written number.

noun. The number of digits that repeat in a repeating decimal. For example, ¹/₇ = 0.142857142857 … has a six-digit period.

noun. A sequence of elements arranged in order of increasing atomic number and forming one of the horizontal rows in the periodic table.

adjective. Of, belonging to, or representing a certain historical age or time.

interjection. Used to emphasize finality, as when expressing a decision or an opinion.

To put an end to.

To end; cease.

noun. plural The menses.

noun. In physical, the time of one complete oscillation or cycle of a periodic motion; the reciprocal of the frequency of a periodic motion.

noun. In astronomy, the time of the revolution of a planet or satellite around its primary. Also orbital period.

noun. In geology, technically, one of the larger divisions of geologic time of either the second or the third order, measured by the time of deposition of a ‘group’ or ‘system’ of formations, and characterized by the presence of a number of allied and similar faunas which as a whole differ from those of other periods.

noun. A circuit: a round; hence, the time in which a circuit or revolution, as of a heavenly body, is made; the shortest interval of time within which any phenomenon goes through its changes of pass through them again immediately as before.

noun. Any round of time, or series of years, days, etc.

noun. An indefinite part of any continued state, existence, or series of events; an epoch: as, the first period of life; the last period of a king's reign; the period of the French revolution.

noun. The point of completion of a cycle of years or round or series of events; limit; end; conclusion; termination.

noun. Hence— The end to be attained; goal.

noun. In rhetoric, a complete sentence from one full stop to another; a passage terminated by a full pause.

noun. In ancient prosody, a group of two or more cola.

noun. In music, a definite and complete division of a composition, usually consisting of two or more contrasted or complementary phrases; a complete musical sentence.

noun. The point or character that marks the end of a complete sentence, or indicates an abbreviation, etc.; a full stop, thus(.).

noun. In math.: The smallest constant difference which, added to the value of a variable, will leave that of a function (of which it is said to be the period) unchanged.

noun. In vulgar arithmetic, one of several similar sets of figures or terms, marked by points or commas placed regularly after a certain number, as in numeration, in circulating decimals, and in the extraction of roots. Sometimes called degree.

noun. In medicine, one of the phases or epochs which are distinguishable in the course of a disease.

noun. Duration, continuance, term.

noun. Bound, determination.

noun. A portion of time as limited and determined by some recurring phenomenon, as by the completion of a revolution of one of the heavenly bodies; a division of time, as a series of years, months, or days, in which something is completed, and ready to recommence and go on in the same order.

noun. A stated and recurring interval of time; more generally, an interval of time specified or left indefinite; a certain series of years, months, days, or the like; a time; a cycle; an age; an epoch.

noun. One of the great divisions of geological time. See the Chart of Geology.

noun. The termination or completion of a revolution, cycle, series of events, single event, or act; hence, a limit; a bound; an end; a conclusion.

noun. A complete sentence, from one full stop to another; esp., a well-proportioned, harmonious sentence.

noun. The punctuation point [.] that marks the end of a complete sentence, or of an abbreviated word.

"The RE is, at least as I understand it (and in 40 years of statistics and econometrics I never ran in to it until started reading climate papers), is 1 minus the ratio of the predicted minus actual values (both in the verification period) squared over the squared deviations of the actual values (in the verification period) less the mean of the __calibration period__."

archæological periods  calippic  canicular period  cave period  cavern period  

division  end  ending  part  section  

myriad  

God  Life  age  ago  answer  

Alexandrine  Archean  Archeozoic  Cambrian  Carboniferous  

geology