this is to say

listen to the pronunciation of this is to say
الإنجليزية - التركية
الإنجليزية - الإنجليزية
Namely
that is to say
In other words. Used to introduce a clarification, simplification, or explanation

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.

that is to say
meaning, which means
that is to say
as follows
this is to say

    الواصلة

    this I·s to Say

    التركية النطق

    dhîs îz tı sey

    النطق

    /ᴛʜəs əz tə ˈsā/ /ðɪs ɪz tə ˈseɪ/

    فيديوهات

    ... MARVIN CHOW: --I have to say she is an impeccable dresser ...
    ... You could go and look at one of these and it would say, ...
المفضلات