Main Entry: in·tro·duc·tion

Pronunciation: \ˌin-trə-ˈdək-shən\

Function: noun

: an action of putting in or inserting <introduction of contrast material through the catheter—Scientific American Medicine>

—in·tro·duce \-ˈd(y)üs\ transitive verb, in·tro·duced; in·tro·duc·ing