1. The act of setting in operation
   "repeated shutdowns and startups are expensive" 
2. The act of starting a new operation or practice
   "the startup of the new factory was delayed by strikes"
   - inauguration

1. Get going or set in motion
   "start up the computer"
   - start 
2. Get off the ground
   - start, embark on, commence

Derived forms: started up, startups, starting up, starts up

Type of: begin, beginning, commence, commencement, lead off, start

Encyclopedia: Start up

• unploughed
• unplowed
• unplug
• unplumbed
• unpointed
• unpointedness
• unpolished
• unpolitical
• unpolled
• unpolluted
• unpompous
• unpopular
• unpopularity
• unpopulated
• unportable
• unposed
• unpotted
• unpowered
• unpractical
• unpracticed
• unpractised
• unprecedented
• unprecedentedly
• unpredictability
• unpredictable