An ELT Glossary : Parallel syntax

  • Definition : The repetition of a sentence structure  or phrase within a piece of text,which helps to give cohesion to the text. It may be used for dramatic or rhetorical effect 

  • Example  : "A small step for man, a giant step for mankind."

  • Political speeches will often use parallel syntax as a persuasive, rhetorical device. It's often found in advertisements for the same reason.