presenter:
(plural: ‘presenters‘; for the right pronunciation, please click here)

a presenter presenting a topic
any person who gives something (a present/a gift) to someone on a particular occasion;
a person who gives out his/her opinion, message, information, awards and trophies to others at a meeting, conference, class, a sports event, a fashion show contest, etc.;
(on radio or TV programmes) a person who introduces guests, items of programmes on the radio or TV; an anchor; an announcer;
a host at a show,

TV presenter
e.g.
The conference was attended by a galaxy of eminent scholars as the presenter was none other than the Apple computers CEO, Steve Jobs.
The TV presenter made several mistakes while introducing her guests of the programme.
The success of an entertainment show depends partly on the performers and partly on the presenter.
