You searched for: “period
Period
The periods unit of punctuation marks.
This entry is located in the following unit: Index of Punctuation Marks (page 1)
period (s) (noun), periods (pl)
A punctuation, ., which is placed at the end of a declarative sentence to indicate a full stop or after abbreviations.
This entry is located in the following unit: Punctuation Marks with Symbols, Explanations, and Examples (page 1)
More possibly related word entries
A unit related to: “period
(periods used as punctuation marks)
Word Entries containing the term: “period
gestation period
A period of 63 days in the dog, from fertilization to whelping.
This entry is located in the following unit: Dog or Canine Terms + (page 5)
historic period
A period when writing systems existed.

The historic period in any particular region begins when writing systems emerge or when literate cultures come into contact with the regions preliterate inhabitants.

This entry is located in the following unit: Archeology, Archaeology (page 4)
period-luminosity relation
A relation obeyed by cepheid variable stars (highly luminous yellow or orange super giant stars that varies regularly in brightness), and which states that the period of the changes in luminosity varies directly with the luminosity of the star.
This entry is located in the following unit: Astronomy and related astronomical terms (page 18)
sidereal period
The time required for a celestial body in the solar system to complete one revolution with respect to the fixed stars (as observed from a fixed point outside the system).

A planet's sidereal period can be calculated from its synodic period or the length of time during which a body in the solar system makes one orbit of the sun relative to the earth.

The sidereal period of the moon or an artificial satellite of the earth is the time it takes to return to the same position against the background of stars.

This entry is located in the following unit: Astronomy and related astronomical terms (page 23)
synodic period
1. The length of time during which a body in the solar system makes one orbit of the sun relative to the earth; that is, returns to the same elongation.

Because the earth moves in its own orbit, the synodic period differs from the sidereal period, which is measured relative to the stars.

The synodic period of the moon, which is called the lunar month, or lunation, is 29 1/2 days long which is longer than the sidereal month.

2. The time required for a body in the solar system to return to the same or about the same position relative to the sun as seen from the earth.

The moon's synodic period is the time between successive recurrences of the same phase; that is, the period between one full moon and the next full moon.

This entry is located in the following unit: Astronomy and related astronomical terms (page 26)
The Period .

A period is a single small dot at the end of a group of words that have been written and it means that this is the end of a complete statement or sentence.

The period is a warning to the reader that the statement is finished and so it must not be run together with whatever follows it.

The idea that is stated in the sentence, or group of words, begins with a capital letter and ends with a period which is presented in the form of a simple assertion.

The writer does not intend to ask the reader a question, nor does he or she want the reader to feel that the sentence is expressing a thought with great emphasis. It is simply stated and that's what the period tells readers.

That is all anyone needs to know about the single little dot which is used as a mark of punctuation and is called a period. Oh, yes, remember that when an abbreviation occurs at the end of a sentence, or a statement, the abbreviation point and the period are combined into one dot and so the use of two dots is not necessary nor acceptable in normal English writing.


Fat little period, round as a ball,
You'd think it would roll,
But it doesn't
At all. Where it stops,
There it plops,
There it stubbornly stays,
At the end of a sentence
For days and days.

"Get out of my way!"
Cries the sentence. "Beware!"
But the period seems not to hear or to care.
Like a stone in the road,
It won't budge, it won't bend.
If it spoke, it would say to a sentence,
"The end."

—This poem is compiled from On Your Marks, A Package of Punctuation
by Richard Armour; McGraw-Hill Book Company; New York; 1969; page 13.
This entry is located in the following unit: Period . (page 1)