start up

verb

1. to come or cause to come into being for the first time; originate

2. (intr) to spring or jump suddenly from a position or place

3. to set in or go into motion, activity, etc

   he started up the engine

   the orchestra started up

adjective

1. of or relating to input, usually financial, made to establish a new project or business

   a start-up mortgage

noun

1. a business enterprise that has been launched recently

Idioms and Phrases

Begin to operate, especially a machine or engine, as in Start up the motor so we can get going . [First half of 1900s]

Move suddenly or begin an activity, as in When the alarm rang I started up . [Early 1200s]

Organize a new enterprise, as in Starting up a business requires considerable capital . [Second half of 1900s]