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noun men·stru·a·tion \ˌmen(t)-strü-ˈwā-shən, men-ˈstrā-\

Definition of MENSTRUATION

:  a discharging of blood, secretions, and tissue debris from the uterus that recurs in nonpregnant breeding-age primate females at approximately monthly intervals and that is considered to represent a readjustment of the uterus to the nonpregnant state following proliferative changes accompanying the preceding ovulation; also :  period 6c


  1. <a first menstruation can be somewhat scary for girls who are unprepared>

First Known Use of MENSTRUATION




abdication, aberration, abjuration, abnegation, abrogation, acceptation, acclamation, accusation, activation, adaptation, adjuration, admiration, adoration, adulation, adumbration, affectation, affirmation, aggravation, aggregation, agitation, allegation, allocation, amputation, alteration, altercation, animation, annexation, annotation, appellation, application, approbation, arbitration, arrogation, aspiration, assignation, attestation, augmentation, automation, aviation, avocation, blaxploitation, botheration, calculation, calibration, cancellation, carbonation, castigation, celebration, cerebration, chlorination, circulation, cogitation, collocation, coloration, combination, comfort station, commendation, commutation, compensation, complication, computation, concentration, condemnation, condensation, confirmation, confiscation, conflagration, conformation, confrontation, congregation, conjugation, connotation, consecration, conservation, consolation, constellation, consternation, constipation, consultation, consummation, contemplation, conurbation, conversation, convocation, copulation, coronation, corporation, correlation, corrugation, crenellation, crop rotation, culmination, cultivation, cumulation, cybernation, decimation, declamation, declaration, declination, decoration, dedication, defamation, defecation, deformation, degradation, dehydration, delectation, delegation, demarcation, demonstration, denigration, denotation, depilation, deportation, depravation, depredation, deputation, derivation, derogation, desecration, designation, desolation, desperation, destination, detestation, detonation, devastation, deviation, dislocation, dispensation, disputation, dissertation, dissipation, distillation, divination, domination, education, elevation, elongation, emanation, embarkation, embrocation, emendation, emigration, emulation, enervation, escalation, estimation, evocation, exaltation, excavation, excitation, exclamation, exculpation, execration, exhalation, exhortation, exhumation, expectation, expiation, expiration, explanation, explication, exploitation, exploration, exportation, expurgation, extirpation, exultation, fabrication, fascination, federation, fenestration, fermentation, fibrillation, figuration, filling station, fire station, flagellation, fluoridation, fluctuation, forestation, formulation, fornication, fragmentation, fulmination, fumigation, gene mutation, generation, germination, glaciation, graduation, granulation, gravitation, habitation, hesitation, hibernation, hyphenation, ideation, imitation, immigration, immolation, implantation, implication, importation, imprecation, imputation, incantation, incarnation, inclination, incrustation, incubation, indentation, indication, indignation, infestation, infiltration, inflammation, information, inhalation, innovation, inspiration, installation, instigation, insulation, integration, intimation, intonation, inundation, invitation, invocation, irrigation, irritation, iteration, jubilation, laceration, lamentation, lamination, legislation, levitation, liberation, limitation, lineation, liquidation, litigation, lubrication, lucubration, maceration, machination, malformation, masturbation, maturation, mediation, medication, meditation, melioration, ministration, mitigation, moderation, modulation, molestation, motivation, mutilation, navigation, nomination, obfuscation, objurgation, obligation, observation, occupation, operation, orchestration, ordination, oscillation, osculation, ostentation, ovulation, oxidation, pagination, palpitation, penetration, percolation, perforation, permeation, permutation, perpetration, perspiration, perturbation, pigmentation, pixilation, police station, pollination, population, postulation, power station, predication, preparation, presentation, preservation, proclamation, procreation, profanation, prolongation, promulgation, propagation, prorogation, protestation, provocation, publication, punctuation, radiation, recantation, recitation, reclamation, re-creation, recreation, reformation, refutation, registration, regulation, rehydration, relaxation, relocation, renovation, reparation, replication, reprobation, reputation, reservation, resignation, respiration, restoration, retardation, revelation, revocation, ruination, rumination, rustication, salutation, sanitation, saturation, segmentation, segregation, separation, sequestration, service station, sexploitation, simulation, situation, speciation, speculation, spoliation, stimulation, stipulation, strangulation, structuration, stylization, subjugation, sublimation, suffocation, syncopation, syndication, tabulation, termination, T formation, titillation, toleration, transfer station, transformation, translocation, transmigration, transmutation, transpiration, transplantation, transportation, trepidation, tribulation, ulceration, ululation, undulation, urination, vaccination, vacillation, validation, valuation, variation, vegetation, veneration, ventilation, vindication, violation, visitation, weather station
MENSTRUATION Defined for Kids


noun men·stru·a·tion \ˌmen-strə-ˈwā-shən, men-ˈstrā-shən\

Definition of MENSTRUATION for Kids

:  a discharge of bloody fluid from the uterus that usually happens each month
Medical Dictionary


noun men·stru·a·tion \ˌmen(t)-strə-ˈwā-shən, men-ˈstrā-\

Medical Definition of MENSTRUATION

:  a discharging of blood, secretions, and tissue debris from the uterus that recurs in nonpregnant human and other primate females of breeding age at approximately monthly intervals and that is considered to represent a readjustment of the uterus to the nonpregnant state following proliferative changes accompanying the preceding ovulation; also :  period 1b


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