In May I finished a second edition of my Learner-Centered Teaching book. Revising it gave me the chance to revisit my thinking about the topic and look at work done since publication of the first edition ten years ago. It is a subject about which there is still considerable interest. The learner-centered label now gets attached to teaching strategies, teachers, classes, programs, departments and institutions. Like many trendy descriptors in higher education, with widespread use comes a certain definitional looseness. Active learning, student engagement and other strategies that involve students and mention learning are called learner-centered. And although learner-centered teaching and efforts to involve students have a kind of bread and butter relationship, they are not the same thing. In the interest of more definitional precision, I’d like to propose five characteristics of teaching that make it learner-centered.