What does the cryptic crossword clue "Omitting pieces in speech – TV drops one initially, and a couple more later (7)" mean?

The wordplay uses a deletion. EL (deletion) + ISION (deletion) = ELISION The answer is ELISION.

Omitting pieces in speech – TV drops one initially, and a couple more later (7)

Guardian Cryptic #29292 | 4 Down | 2024-01-30 flower