| Definition - The symbol … when it is used to indicate missing words in a sentence.
1. The term ellipsis once denoted the dash (—) when it was used to indicate the omitting of letters in a word. This sense is now obsolete.
1. Use ellipsis to show the omission of words, phrases, or lines from quoted material.
He said … and then left the room.
2. Use ellipsis followed by the sentence's ending punctuation mark (e.g. a period or an exclamation mark) to show that the last part of the sentence has been omitted.
He said nothing and … .
3. If you want the sentences to trail off, end it with ellipsis but omit the terminating punctuation.
The world will end not with a bang but with …
Etymology - The word derives from the Greek elleipsis, a leaving out (from en, in + leipein, to leave).
Oxford English Dictionary - Its first citation in its punctuation-mark sense is from 1824:
"An Ellipsis … is used, when some letters in a word, or some words in a verse, are omitted: as ‘The k—g’ for ‘the king’."
(L. Murray Eng. Gram. I. 413)