1580s, as a of preachers, agent noun from lecture (v.). From 1610s as "one who gives formal lectures."
Entries linking to lecturer
lecture v.
1580s, "to read or deliver formal discourses," from lecture (n.). Transitive sense "instruct by oral discourse" is from 1680s. Meaning "to address severely and at length" is from 1706. Related: Lectured; lecturing.