Meaning : The interval taken to complete one cycle of a regularly repeating phenomenon.
Meaning : (ice hockey) one of three divisions into which play is divided in hockey games.
Meaning : A unit of geological time during which a system of rocks formed.
Ganoid fishes swarmed during the earlier geological periods.
Synonyms : geological period
Meaning : The end or completion of something.
Death put a period to his endeavors.
A change soon put a period to my tranquility.
Meaning : 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.
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.