An amount of time:
— A time period of 30 years.
— Hastened the period of time of his recovery.
— Picasso's blue period.

synonyms: period of time, time period.

Roget 106: time, duration; period, term, stage, space, span, spell, season; the whole time, the whole period; space-time; course etc. 109; snap.    intermediate time, while, interim, interval, pendency^†; intervention, intermission, intermittence, interregnum, interlude; respite.    era, epoch; time of life, age, year, date; decade etc. (period) 108; moment, etc. (instant) 113.    glass of time, sands of time, march of time, Father Time, ravages of time; arrow of time; river of time, whirligig of time, noiseless foot of time; scythe.    ... show more

Roget 198: interval, interspace^†; separation etc. 44; break, gap, opening; hole etc. 260; chasm, hiatus, caesura; interruption, interregnum; interstice, lacuna, cleft, mesh, crevice, chink, rime, creek, cranny, crack, chap, slit, fissure, scissure^†, rift, flaw, breach, rent, gash, cut, leak, dike, ha-ha.    gorge, defile, ravine, canon, crevasse, abyss, abysm; gulf; inlet, frith^†, strait, gully; pass; furrow etc. 259; abra^†; barranca^†, barranco^†; clove [U.S.], gulch [U.S.], notch [U.S.]; yawning gulf; hiatus maxime [Lat.], hiatus valde deflendus [Lat.]; parenthesis etc. (interjacence) 228^†; void etc. (absence) 187; incompleteness etc. 53.    [interval of time] period etc. 108; interim (time) 106.    ... show more

Roget 108: period, age, era; second, minute, hour, day, week, month, quarter, year, decade, decenniumm lustrum^†, quinquennium, lifetime, generation; epoch, ghurry^†, lunation^†, moon.    century, millennium; annus magnus [Lat.].    ... show more

Dutch: periode
Polish: pora, moment, okres, period, czas

The interval taken to complete one cycle of a regularly repeating phenomenon.

Dutch: regels, ongesteldheid, maandstonden, menstruatie, maandbloeding
Polish: okres

ice hockey One of three divisions into which play is divided in hockey games.

Polish: tercja

A unit of geological time during which a system of rocks formed:
— Ganoid fishes swarmed during the earlier geological periods.

synonym: geological period.

Polish: okres

The end or completion of something.

The monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause.

synonyms: catamenia, flow, menses, menstruation, menstruum.

Roget 138: periodicity, intermittence; beat; oscillation etc. 314; pulse, pulsation; rhythm; alternation, alternateness, alternativeness, alternity^†.    bout, round, revolution, rotation, turn, say.    anniversary, jubilee, centenary.    catamenia^†, courses, menses, menstrual flux.    [Regularity of return] rota, cycle, period, stated time, routine; days of the week; Sunday, Monday &c.; months of the year; January &c.; feast, fast &c.; Christmas, Easter, New Year's day &c.; Allhallows^†, Allhallowmas^†, All Saints' Day; All Souls', All Souls' Day; Ash Wednesday, bicentennial, birthday, bissextile^†, Candlemas^†, Dewali, groundhog day [U.S.], Halloween, Hallowmas^†, Lady day, leap year, Midsummer day, Muharram, woodchuck day [U.S.], St.    Swithin's day, natal day; yearbook; yuletide.    punctuality, regularity, steadiness.    ... show more

Dutch: menstruatie
Polish: menstruacja, okres, krwawienie miesiączkowe, period, miesiączka

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.

synonyms: full point, full stop, point, stop.

Roget 550: indication; symbolism, symbolization; semiology, semiotics, semeiology^†, semeiotics^†; Zeitgeist.    [means of recognition: property] characteristic, diagnostic; lineament, feature, trait; fingerprint, voiceprint, footprint, noseprint [for animals]; cloven hoof; footfall; recognition (memory) 505.    [means of recognition: tool] diagnostic, divining rod; detector.    sign, symbol; index, indice^†, indicator; point, pointer; exponent, note, token, symptom; dollar sign, dollar mark.    type, figure, emblem, cipher, device; representation etc. 554; epigraph, motto, posy.    gesture, gesticulation; pantomime; wink, glance, leer; nod, shrug, beck; touch, nudge; dactylology^†, dactylonomy^†; freemasonry, telegraphy, chirology [Med.], byplay, dumb show; cue; hint etc. 527; clue, clew, key, scent.    signal, signal post; rocket, blue light; watch fire, watch tower; telegraph, semaphore, flagstaff; cresset^†, fiery cross; calumet; heliograph; guidon; headlight.    [sign (evidence) on physobj of contact with another physobj] mark, scratch, line, stroke, dash, score, stripe, streak, tick, dot, point, notch, nick.    print; imprint, impress, impression.    [symbols accompanying written text to signify modified interpretation] keyboard symbols, printing symbols; [Symbols for emphasis], red letter, italics, sublineation^†, underlining, bold font; jotting; note, annotation, reference; blaze, cedilla, guillemets^†, hachure [Topo.]; [Special Characters list], quotation marks, "; double quotes, " "; parentheses, "( )"; brackets, "[ ]"; braces, "{ }", curly brackets; arrows, slashes; left parenthesis, "("; right parenthesis, ")"; opening bracket, "["; closing bracket, "]"; left curly brace, "{"; right curly brace, "}"; left arrow, ""; forward slash, "/"; backward slash, "\\"; exclamation point, "!"; commercial at, "@"; pound sign, "#"; percent sign, "%"; carat, "^"; ampersand, "&"; asterisk, "*"; hyphen, "-"; dash, "-", "_"; em dash, "--"; plus sign, "+"; equals sign, "="; question mark, "?"; period, "."; semicolon, ";"; colon, ":"; comma, ","; apostrophe, "'"; single quote, "'"; tilde, "~". [For identification: general] badge, criterion; countercheck^†, countermark^†, countersign, counterfoil; duplicate, tally; label, ticket, billet, letter, counter, check, chip, chop; dib^†; totem; tessera^†, card, bill; witness, voucher; stamp; cacher [Fr.]; trade mark, Hall mark.    [For identification of people, on a document] signature, mark, autograph, autography; attestation; hand, hand writing, sign manual; cipher; seal, sigil [Lat.], signet, hand and seal [Law]; paraph^†, brand; superscription; indorsement^†, endorsement.    [For identification of people, to gain access to restricted (locations or information)] password, watchword, catchword; security card, pass, passkey; credentials etc. (evidence) 467; open sesame; timbrology^†; mot de passe [Fr.], mot du guet [Fr.]; pass-parole; shibboleth.    title, heading, docket.    address card, visiting card; carte de visite [Fr.].    insignia; banner, banneret^†, bannerol^†; bandrol^†; flag, colors, streamer, standard, eagle, labarum^†, oriflamb^†, oriflamme; figurehead; ensign; pennon, pennant, pendant; burgee^†, blue Peter, jack, ancient, gonfalon, union jack; banderole, old glory [U.S.], quarantine flag; vexillum^†; yellow-flag, yellow jack; tricolor, stars and stripes; bunting.    heraldry, crest; coat of arms, arms; armorial bearings, hatchment^†; escutcheon, scutcheon; shield, supporters; livery, uniform; cockade, epaulet, chevron; garland, love knot, favor.    [Of locality] beacon, cairn, post, staff, flagstaff, hand, pointer, vane, cock, weathercock; guidepost, handpost^†, fingerpost^†, directing post, signpost; pillars of Hercules, pharos; bale-fire, beacon-fire; l'etoile du Nord [Fr.]; landmark, seamark; lighthouse, balize^†; polestar, loadstar^†, lodestar; cynosure, guide; address, direction, name; sign, signboard.    [Of the future] warning etc. 668; omen etc. 512; prefigurement etc. 511.    [Of the past] trace, record &c., 551.    [Of danger] warning etc. 668, alarm etc. 669.    [of authority]. scepter etc. 747.    [of triumph]. trophy etc. 733.    [of quantity]. gauge etc. 466.    [Of Distance] milestone, milepost.    [Of disgrace], brand, fool's cap.    [For detection], check, telltale; test etc. (experiment) 463; mileage ticket; milliary^†.    notification etc. (information) 527; advertisement etc. (publication) 531.    word of command, call; bugle call, trumpet call; bell, alarum, cry; battle cry, rallying cry; angelus^†; reveille; sacring bell^†, sanctus bell [Lat.].    exposition etc. (explanation) 522, proof etc. (evidence) 463; pattern etc. (prototype) 22.    ... show more

Roget 142: cessation, discontinuance, desistance, desinence^†.    intermission, remission; suspense, suspension; interruption; stop; stopping etc. v.; closure, stoppage, halt; arrival etc. 292.    pause, rest, lull, respite, truce, drop; interregnum, abeyance; cloture [U.S.].    dead stop, dead stand, dead lock; finis, cerrado [Sp.]; blowout, burnout, meltdown, disintegration; comma, colon, semicolon, period, full stop; end etc. 67; death etc. 360.    ... show more

Roget 71: term, rank, station, stage, step; degree etc. 26; scale, remove, grade, link, peg, round of the ladder, status, position, place, point, mark, pas, period, pitch; stand, standing; footing, range.    ... show more

Roget 67: end, close, termination; desinence^†, conclusion, finis, finale, period, term, terminus, endpoint, last, omega; extreme, extremity; gable end, butt end, fag-end; tip, nib, point; tail etc. (rear) 235; verge etc. (edge) 231; tag, peroration; bonne bouche [Fr.]; bottom dollar, tail end, rear guard.    consummation, denouement; finish etc. (completion) 729; fate; doom, doomsday; crack of doom, day of Judgment, dies irae, fall of the curtain; goal, destination; limit, determination; expiration, expiry^†, extinction, extermination; death etc. 360; end of all things; finality; eschatology.    break up, commencement de la fin, last stage, turning point; coup de grace, deathblow; knock-out-blow; sockdolager [U.S.].    ... show more

Dutch: oord, plaats, punt
Polish: kropka