sev·en·ti·eth 
(sĕvən-tē-ĭth)
(sĕvən-tē-ĭth)n.
1. The ordinal number matching the number 70 in a series.
2. One of 70 equal parts.
seven·ti·eth adv. & adj.
- prognathous
- prognosis
- prognostic
- prognosticate
- prognostication
- prognosticative
- prognosticator
- prograde
- program
- program director
- programed
- programer
- programing
- programmability
- programmable
- programmatic
- programmatically
- programme
- programmed
- programmed cell death
- programmed instruction
- programmer
- programming
- programming language
- program music