Complex sentence: The "ortho" description was historically used to designate the original compound and an isomer was often called the "meta" compound, see for instance the trivial names orthophosphoric acid and trimetaphosphoric acid having nothing to do with aromats at all.
Split into simpler sentences: The "ortho" description was historically used to designate the original compound and an isomer was often called the "meta" compound. For instance, the trivial names orthophosphoric acid and trimetaphosphoric acid have nothing to do with aromatics at all.