Omitting pieces in speech – TV drops one initially, and a couple more later (7)
I believe the answer is:
elision
I'm afraid I can't explain this answer.
Can you help me to learn more?
(Other definitions for elision that I've seen before include "Dropping of vowel" , "Omission (of a syllable)" , "Omission (from a book, etc)" , "Dropping a letter" , "Omission of syllables in speech" .)