起始 is read as きし (kishi) and means start.
きし
kishi
きしてん
origin (of an artery, nerve, etc.)
おこす
to fall ill with
おこる
to occur
きりつ
standing up
おきる
to get up
おきあがる
to rise
きどう
startup
きよう
appointment (to a position, job, etc.)
きこう
setting to work
きぎょう
starting a business
おこり
source
きどうじかん
startup (interval of) time