period

(n) an amount of time
- a time period of 30 years
- hastened the period of time of his recovery
- Picasso's blue period
period of time, time period,
(n) the interval taken to complete one cycle of a regularly repeating phenomenon
(n) (ice hockey) one of three divisions into which play is divided in hockey games
(n) a unit of geological time during which a system of rocks formed
- ganoid fishes swarmed during the earlier geological periods
geological period,
(n) the end or completion of something
- death put a period to his endeavors
- a change soon put a period to my tranquility
(n) 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
catamenia, menses, menstruation, menstruum, flow,
(n) 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
full point, full stop, stop, point,

period of time time period geological period catamenia menses menstruation menstruum flow full point full stop stop point

peril

perish

periodic periodic acid periodical periodical cicada periodically periodic apnea of the newborn periodic breathing periodic edema periodic event periodicity periodic law periodic motion periodic movement periodic sentence periodic table period of play period of time periodontal periodontal disease periodontia periodontic periodontics periodontist periodontitis period piece