The comma is a punctuation mark, and it appears in several variants in various languages. It has the same shape as an apostrophe or single closing quotation mark in many typefaces, but it differs from them in being placed on the baseline of the text. Some typefaces render it as a small line, slightly curved or straight but inclined from the vertical, or with the appearance of a small, filled-in number 9. It is used to separate parts of a sentence such as clauses and lists of three or more things.

The comma is used in many contexts and languages, principally for separating things. According to the Oxford English Dictionary, the word comma comes directly from the Greek komma (κόμμα), which means something cut off or a short clause. A comma can also be used as a diacritic when combined with other characters.

Read more about Comma:  Comma Variants, History, Uses in English, In Other Languages, Computing, Diacritical Usage

Other articles related to "comma, commas":

Comma - Diacritical Usage
... The comma is used as a diacritic mark in Romanian under the s (Ș, ș), and under the t (Ț, ț) ... The symbol d̦ (d with comma below) was used as part of the Romanian transitional alphabet (19th century) to indicate the sounds denoted by the Latin letter z or letters dz, where derived ... The comma and the cedilla are both derivative of a small cursive z (ʒ) placed below the letter ...
Chinese Punctuation - Marks Similar To European Punctuation
... in size they are fullwidth instead of halfwidth , (U+FF0C FULLWIDTH COMMA) is the comma (,) ... It cannot be used for enumerating a list see "enumeration comma" below ...
Polygonia Comma
... Nymphalis comma The Eastern Comma (Polygonia comma) is a North American butterfly in the family Nymphalidae, subfamily Nymphalinae ...
Chinese Punctuation - Use of Punctuation Marks
... , The comma is used to join together clauses that deal with a certain topic or line of thinking ... As such, what would appear to an English speaker to be a comma splice is very commonly seen in Chinese writing ... Often, the entirety of a long paragraph can consist of clauses joined by commas, with the sole period coming only at the end ...
List Of Butterflies Of Maryland - Nymphalidae - Nymphalinae
... Checkerspot, Euphydryas phaeton Question Mark, Polygonia interrogationis Eastern Comma, Polygonia comma Gray Comma, Polygonia progne Compton Tortoiseshell, Nymphalis vaualbum Milbert's ...

Famous quotes containing the word comma:

    I didn’t have to think up so much as a comma or a semicolon; it was all given, straight from the celestial recording room. Weary, I would beg for a break, an intermission, time enough, let’s say, to go to the toilet or take a breath of fresh air on the balcony. Nothing doing!
    Henry Miller (1891–1980)

    From one casual of mine he picked this sentence. “After dinner, the men moved into the living room.” I explained to the professor that this was Ross’s way of giving the men time to push back their chairs and stand up. There must, as we know, be a comma after every move, made by men, on this earth.
    James Thurber (1894–1961)