• Albanian: periodike
• Arabic: (ħádaθ mutakárrir)
• Croatian: period
• Czech: perioda
• Dutch: periode
• French: période, cycle
• Greek: περίοδος
• Hungarian: periódus
• Norwegian: periode
• Portuguese: período
• Slovak: perióda

See also menstruation

• Albanian: zakone
• Arabic: (ħaid) , (ʕāda šahríyya)
• Croatian: menstruacija
• Finnish: kuukautiset p
• Italian: mestruazioni
• Greek: περίοδος (períoðos)
• Spanish: achaque

Croatian

Noun

1. period (time)

Declension

Period or periodic may refer to:

Language and literature

• Full stop, a punctuation mark indicating the end of a sentence or phrase
• Periodic sentence (rhetoric), a sentence that is not grammatically complete until its end
• The final book in Dennis Cooper's George Miles cycle of novels

Science and mathematics

• Menstruation, a phase of the menstrual cycle in which the uterine lining is shed
• Orbital period, a concept in astronomy
• Period (gene), a gene in Drosophila involved in regulating circadian rhythm
• Period (geology), a subdivision of geologic time
• Period (number), a concept in mathematics
• Period (periodic table), a horizontal row of the periodic table
• Period (physics), the inverse of frequency (a division of time)
• Periodic acid, an oxoacid of iodine

Other meanings

• Period (music), a concept in musical composition
• Periodicity, the quality of occurring at regular intervals
• Historical period, a way to categorize stretches of time

See also

• Periodization

Alexandrine, Archean, Archeozoic, Cambrian, Carboniferous, Cenozoic, Comanchean, Cretaceous, Devonian, Eocene, Glacial, Holocene, Lower Cretaceous, Lower Tertiary, Mesozoic, Miocene, Mississippian, Oligocene, Paleocene, Paleozoic, Pennsylvanian, Permian, Pleistocene, Pliocene, Precambrian, Proterozoic, Quaternary, Recent, Silurian, Tertiary, Triassic, Upper Cretaceous, Upper Tertiary, Z, accent, accentuation, adjectival phrase, aeon, age, amount, amphibrach, amphimacer, amplitude, anacrusis, anapest, annual period, antinode, antispast, aphelion, apodosis, apogee, arsis, astronomical longitude, autumnal equinox, bacchius, baseball season, basketball season, bass passage, beat, boundary, bourdon, bridge, burden, cadence, caesura, caliber, catalexis, catamenia, catamenial discharge, catastrophe, ceasing, celestial equator, celestial longitude, celestial meridian, cessation, chloriamb, chloriambus, chorus, chronology, circle, clause, close, closing, closure, coda, cold season, colon, colures, comma, compass, concert season, conclusion, construction, consummation, continuity, counterpoint, courses, crack of doom, crest, cretic, culmination, curtain, curtains, cut, dactyl, days, de Broglie wave, death, decease, degree, denouement, destination, destiny, development, diaeresis, diffraction, dimeter, dipody, discontinuance, division, dochmiac, doom, dry season, duration, duree, ecliptic, effect, electromagnetic wave, elegiac, elegiac couplet, elegiac pentameter, emphasis, end, end point, ending, envoi, epilogue, epitrite, epoch, equator, equinoctial, equinoctial circle, equinoctial colure, equinox, era, eschatology, expiration, exposition, expression, extent, fate, feminine caesura, figure, final solution, final twitch, final words, finale, finality, finis, finish, flowers, folderol, foot, football season, frequency, frequency band, frequency spectrum, full stop, galactic longitude, geocentric longitude, geodetic longitude, goal, grade, great circle, guided wave, harmonic close, headed group, height, heliocentric longitude, heptameter, heptapody, heroic couplet, hexameter, hexapody, iamb, iambic, iambic pentameter, ictus, idiom, idiotism, in phase, interference, interlude, intermezzo, interval, introductory phrase, ionic, izzard, jingle, juncture, last, last breath, last gasp, last things, last trumpet, last words, lastingness, latter end, leap, level, light, lilt, locution, longitude, longitudinal wave, manner of speaking, mark, masculine caesura, measure, mechanical wave, menses, menstrual discharge, menstruation, meridian, meter, metrical accent, metrical foot, metrical group, metrical unit, metron, molossus, monthlies, mora, movement, musical phrase, musical sentence, node, notch, noun phrase, nuance, numbers, off season, omega, orbit, ornament, out of phase, paeon, paragraph, part, pas, passage, patch, pause, payoff, peculiar expression, peg, pentameter, pentapody, perigee, perihelion, periodic wave, periodicity, periods, peroration, phrasal idiom, phrase, pitch, plane, plateau, point, proceleusmatic, proportion, psychological time, pyrrhic, quantity, quietus, radio wave, rainy season, range, ratio, ray, reach, refrain, reinforcement, remove, resolution, resonance, resonance frequency, response, resting place, rhythm, ritornello, round, rung, scale, scope, season, seasonableness, seasonality, section, seismic wave, semicolon, sentence, set phrase, shade, shadow, shock wave, small circle, social season, solstitial colure, sound wave, space, space-time, span, spell, spondee, sprung rhythm, stair, standard, standard phrase, stanza, statement, step, stint, stop, stoppage, stopping place, strain, stress, stretch, surface wave, swan song, swing, syntactic structure, syzygy, tailpiece, tense, term, terminal, termination, terminus, tetrameter, tetrapody, tetraseme, that time, the curse, the future, the past, the present, the season, thesis, tidal wave, tide, time, time of year, timebinding, trajectory, transverse wave, tread, tribrach, trimeter, tripody, triseme, trochee, trough, turn of expression, turn of phrase, tutti, tutti passage, usage, utterance, variation, verb complex, verb phrase, verbalism, vernal equinox, verse, wave, wave equation, wave motion, wave number, wavelength, way of speaking, while, windup, word-group, years, zodiac, zone