A portion of time as limited and determined by
some recurring phenomenon, as by the completion of a revolution of one
of the heavenly bodies; a division of time, as a series of years,
months, or days, in which something is completed, and ready to
recommence and go on in the same order; as, the period of the
sun, or the earth, or a comet.
A stated and recurring interval of
time; more generally, an interval of time specified or left
indefinite; a certain series of years, months, days, or the like; a
time; a cycle; an age; an epoch; as, the period of the Roman
republic.
One of the great divisions
of geological time; as, the Tertiary period; the Glacial
period. See the Chart of Geology.
The termination or completion of a
revolution, cycle, series of events, single event, or act; hence, a
limit; a bound; an end; a conclusion.
A complete sentence, from
one full stop to another; esp., a well-proportioned, harmonious
sentence.
The punctuation point [.]
that marks the end of a complete sentence, or of an abbreviated
word.
One of several similar sets
of figures or terms usually marked by points or commas placed at
regular intervals, as in numeration, in the extraction of roots, and
in circulating decimals.
The time of the exacerbation
and remission of a disease, or of the paroxysm and
intermission.
A complete musical
sentence.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
