Lecturer
Lecturer is the name given to university teachers in most of the English-speaking world (not the US or Canada) who do not hold a professorship. Lecturers are generally divided into Lecturers, Senior Lecturers, and Readers and are normally permanent positions in a university which involve carrying out both teaching and research. Most lecturers have PhDs, and in many fields this is a pre-requisite of the job.
Some American universities have Lecturers whose responsibility is undergraduate education, especially for introductory courses that attract hordes of students. These lecturers generally do not have research duties, and the position is sometimes regarded as less prestigious than a professorship. (see the article, "professor")
