(linguistics) One of fourteen Arabic letters that donot affect the pronunciation of the "L" of a preceding definite article (ال-(al--)). The "L" in the Arabic definite article is pronounced "L" when followed by a moon letter: e.g.,القُرْآن(al-qurʔān). The fourteen moon letters are:ء(ʔ),ب(b),ج(j),ح(ḥ),خ(ḵ),ع(ʕ),غ(ḡ),ف(f),ق(q),ك(k),م(m),ه(h),و(w),ي(y)
