Related Clues:

• It's heard before a liftoff
• 'A Chorus Line' number
• See 34-Down
• Formula ___
• 'Blastoff!' preceder
• Consummate a deal, maybe
• It's inseparable
• ''--- True Thing'' (1998)
• Better than none
• The loneliest number, in song
• Deal binder, traditionally
• Starting square
• Single thing
• Two less than 38-Down
• It might be broken into quarters