IPA: /ɪnˈdruːsər/
KK: /ɪnˈtrudʒər/
A person or thing that presents someone or something to another person or group.
The introducer welcomed the guests and introduced the speaker.
Introducer → It is formed from "intro-" (meaning into) and "ducere" (meaning to lead). The word "introducer" refers to someone who leads or brings someone into a situation or group.
Think of someone 'leading' ('ducere') someone 'into' ('intro-') a new environment — that's why an introducer is someone who brings others in.