negative reinforcement the removal, prevention, or postpone...
cathexis n. in psychoanalytic theory, the investment of psy...
afterplay n. affectionate and sensual activity (e.g., huggi...
Gödel’s proof a proof that in any logic system at least as...
digraph n. a combination of two letters or other symbols us...
diopter n. a unit of the power of a lens, equal to the reci...