expression
dispensing with the preliminaries
Used at the beginning of a brief letter or message to skip formal seasonal greetings and get straight to the point.
前略、先日は大変お世話になりました。
Without further ado, thank you very much for your help the other day.
noun, noun or participle which takes 'suru', intransitive verb
omitting the previous part; abridging the foregoing
Used when quoting a passage and skipping the earlier portion; often seen in academic or formal citations.
引用文の冒頭に「（前略）」と入れて、前の部分を省いた。
I put '(abridged)' at the beginning of the quotation to indicate that the earlier part was omitted.