that is to say

that is to say (not comparable)

1. (conjunctive) In other words. Used to introduce a clarification, simplification, or explanation

   Synonyms: that is, i.e.; see also Thesaurus:in other words

   Hyponyms: namely, to wit

   One of the best things about works of music is that they are repeatable, that is to say that one can listen to the same work over and over without becoming tired of it.