Alabama period () A period in the American eocene, the lowest in the tertiary age except the lignitic. |
Catskill period () The closing subdivision of the Devonian age in America. The rocks of this period are well developed in the Catskill mountains, and extend south and west under the Carboniferous formation. See the Diagram under Geology. |
Champlain period () A subdivision of the Quaternary age immediately following the Glacial period |
Chemung period () A subdivision in the upper part of the Devonian system in America, so named from the Chemung River, along which the rocks are well developed. It includes the Portage and Chemung groups or epochs. See the Diagram under Geology. |
Hamilton period () A subdivision of the Devonian system of America |
Niagara period () A subdivision or the American Upper Silurian system, embracing the Medina, Clinton, and Niagara epoch. The rocks of the Niagara epoch, mostly limestones, are extensively distributed, and at Niagara Falls consist of about eighty feet of shale supporting a greater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology. |
Period (n.) 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 |
Period (n.) A stated and recurring interval of time |
Period (n.) One of the great divisions of geological time |
Period (n.) The termination or completion of a revolution, cycle, series of events, single event, or act |
Period (n.) A complete sentence, from one full stop to another |
Period (n.) The punctuation point [.] that marks the end of a complete sentence, or of an abbreviated word. |
Period (n.) One of several similar sets of figures or terms usually marked by points or commas placed at regular intervals, as in numeration, in the extraction of roots, and in circulating decimals. |
Period (n.) The time of the exacerbation and remission of a disease, or of the paroxysm and intermission. |
Period (n.) A complete musical sentence. |
Period (v. t.) To put an end to. |
Period (v. i.) To come to a period |
Revolution (n.) The act of revolving, or turning round on an axis or a center |
Revolution (n.) Return to a point before occupied, or to a point relatively the same |
Revolution (n.) The space measured by the regular return of a revolving body |
Revolution (n.) The motion of any body, as a planet or satellite, in a curved line or orbit, until it returns to the same point again, or to a point relatively the same |
Revolution (n.) The motion of a point, line, or surface about a point or line as its center or axis, in such a manner that a moving point generates a curve, a moving line a surface (called a surface of revolution), and a moving surface a solid (called a solid of revolution) |
Revolution (n.) A total or radical change |
Revolution (n.) A fundamental change in political organization, or in a government or constitution |
Salina period () The period in which the American Upper Silurian system, containing the brine-producing rocks of central New York, was formed. See the Chart of Geology. |
Trenton period () A subdivision in the lower Silurian system of America |
revolution | the overthrow of a government by those who are governed |
course session class period recitation | a regularly scheduled session as part of a course of study |
American Revolution American Revolutionary War War of American Independence American War of Independence | the revolution of the American Colonies against Great Britain, - |
Chinese Revolution | the republican revolution against the Manchu dynasty in China, - |
Cuban Revolution | the revolution led by Fidel Castro and a small band of guerrilla fighters against a corrupt dictatorship in Cuba, - |
English Revolution Glorious Revolution Bloodless Revolution | the revolution against James II, there was little armed resistance to William and Mary in England although battles were fought in Scotland and Ireland (-) |
French Revolution | the revolution in France against the Bourbons, - |
Mexican Revolution | a revolution for agrarian reforms led in northern Mexico by Pancho Villa and in southern Mexico by Emiliano Zapata (-) |
Russian Revolution February Revolution | the revolution against the czarist government which led to the abdication of Nicholas II and the creation of a provisional government in March |
Russian Revolution October Revolution | the coup d'etat by the Bolsheviks under Lenin in November that led to a period of civil war which ended in victory for the Bolsheviks in |
period piece | any work of art whose special value lies in its evocation of a historical period |
period point full stop stop full point | a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations, in England they call a period a stop |
revolution | a drastic and fareaching change in ways of thinking and behaving, the industrial revolution was also a cultural revolution |
Cultural Revolution Great Proletarian Cultural Revolution | a radical reform in China initiated by Mao Zedong in and carried out largely by the Red Guard, intended to eliminate counterrevolutionary elements in the government it resulted in purges of the intellectuals and socioeconomic chaos |
green revolution | the introduction of pesticides and high-yield grains and better management during the s and s which greatly increased agricultural productivity |
rotation revolution gyration | a single complete turn (axial or orbital), the plane made three rotations before it crashed, the revolution of the earth about the sun takes one year |
menstruation menses menstruum catamenia period flow | the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause, the women were sickly and subject to excessive menstruation, a woman does not take the gout unless her menses be stopped--Hippocrates, the semen begins to appear in males and to be emitted at the same time of life that the catamenia begin to flow in females--Aristotle |
spheroid ellipsoid of revolution | a shape that is generated by rotating an ellipse around one of its axes, it looked like a sphere but on closer examination I saw it was really a spheroid |
time period period of time period | an amount of time, a time period ofyears, hastened the period of time of his recovery, Picasso's blue period |
trial period test period | a period of time during which someone or something is tested |
Quaternary Quaternary period Age of Man | last million years |
Tertiary Tertiary period | from million to million years ago |
Cretaceous Cretaceous period | from million to million years ago, end of the age of reptiles, appearance of modern insects and flowering plants |
Jurassic Jurassic period | frommillion to million years ago, dinosaurs, conifers |
Triassic Triassic period | frommillion tomillion years ago, dinosaurs, marine reptiles, volcanic activity |
Permian Permian period | frommillion tomillion years ago, reptiles |
Carboniferous Carboniferous period | from million tomillion years ago |
Pennsylvanian Pennsylvanian period Upper Carboniferous Upper Carboniferous period | frommillion tomillion years ago, warm climate, swampy land |
Mississippian Missippian period Lower Carboniferous Lower Carboniferous period | from million tomillion years ago, increase of land areas, primitive ammonites, winged insects |
Devonian Devonian period Age of Fishes | frommillion to million years ago, preponderance of fishes and appearance of amphibians and ammonites |
Silurian Silurian period | from million tomillion years ago, first air-breathing animals |
Ordovician Ordovician period | from million to million years ago, conodonts and ostracods and algae and seaweeds |
Cambrian Cambrian period | from million to about million years ago, marine invertebrates |
Precambrian Precambrian eon Precambrian aeon Precambrian period | the eon following the Hadean time and preceding the Phanerozoic eon, from about , million years ago until million years ago |
period | the end or completion of something, death put a period to his endeavors, a change soon put a period to my tranquility |
neonatal period | the first days of life |
latency stage latency phase latency period | (psychoanalysis) the fourth period (from about age or until puberty) during which sexual interests are supposed to be sublimated into other activities |
day twenty-four hours twenty-four hour period -hour interval solar day mean solar day | time for Earth to make a complete rotation on its axis, two days later they left, they put on two performances every day, there are , passengers per day |
lunchtime lunch period | the customary or habitual hour for eating lunch, he observed a regular lunchtime |
gestation gestation period | the period during which an embryo develops (about days in humans) |
refractory period | (neurology) the time after a neuron fires or a muscle fiber contracts during which a stimulus will not evoke a response |
overtime period | a period of overtime play to resolve a tie, e.g. basketball |
period geological period | a unit of geological time during which a system of rocks formed, ganoid fishes swarmed during the earlier geological periods |
historic period age | an era of history having some distinctive feature, we live in a litigious age |
ice age glacial period glacial epoch | any period of time during which glaciers covered a large part of the earth's surface, the most recent ice age was during the Pleistocene |
playing period period of play play | (in games or plays or other performances) the time during which play proceeds, rain stopped play in the th inning |
first period | the first division into which the play of a game is divided |
second period | the second division into which the play of a game is divided |
final period | the final division into which the play of a game is divided |
period | (ice hockey) one of three divisions into which play is divided in hockey games |