- a speech defect in which l is pronounced instead of r, or in which an l-sound is mispronounced.
Origin of lallation
1640–50; < Latin lallā(re) to sing lala or lullaby + -tion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- phonetics a defect of speech consisting of the pronunciation of (r) as (l)
C17: from Latin lallāre to sing lullaby, of imitative origin