A row in the periodic table of the elements.
A length of time.
The punctuation mark “.” (indicating the ending of a sentence or marking an abbreviation).
One or more additional intervals to decide a tied game, an overtime period.
A complete sentence, especially one expressing a single thought or making a balanced, rhythmic whole.
A period of time in history seen as a single coherent entity; an epoch, era.
The length of time during which the same characteristics of a periodic phenomenon recur, such as the repetition of a wave or the rotation of a planet.
An end or conclusion; the final point of a process etc.
A section of an artist's, writer's (etc.) career distinguished by a given quality, preoccupation etc.
A geochronologic unit of millions to tens of millions of years; a subdivision of an era, and subdivided into epochs.
Each of the divisions into which a school day is split, allocated to a given subject or activity.
Each of the intervals, typically three, of which a game is divided.
A Drosophila gene, the gene product of which is involved in regulation of the circadian rhythm.
The length of an interval over which a periodic function, periodic sequence or repeating decimal repeats; often the least such length.
Female menstruation; an episode of this.
A decisive end to something; a stop.
Two phrases (an antecedent and a consequent phrase).
Designating anything from a given historical era.
Evoking, or appropriate for, a particular historical period, especially through the use of elaborate costumes and scenery.
That's final; that's the end of the matter (analogous to a period ending a sentence); end of story.
A sequence of things in order.
In Roman and Scots law, the taking of property by one person in place of another.
An act of following in sequence.
A group of rocks or strata that succeed one another in chronological order.
A right to take possession.
A race or series of descendants.
A passing of royal powers.
Rotation, as of crops.