ieisme

Etymology
Compare.

Noun

 * 1)  a feature found in varieties of Eastern Catalan whereby the Vulgar Latin medial clusters c'l, g'l, t'l, and ly (from le and li before vowels) yield the consonant [j] instead of the [ʎ] found in other varieties. For instance,  instead of
 * 2)  More generally, pronunciation of etymological [ʎ] as [j], as in Modern French and most contemporary varieties of Spanish
 * 1)  More generally, pronunciation of etymological [ʎ] as [j], as in Modern French and most contemporary varieties of Spanish