In behaviorist-based instructional design processes, an expected outcome of an instructional unit. A well-constructed behavioral objective consists of three parts: conditions, behavior, and criteria.

(programming) Using entities called objects that can process data and exchange messages with other objects.

A lesson taught (especially to young children) using a familiar or unusual object as a focus. / An example from real life that explains a principle or teaches a lesson.

The region of space containing objects that an optical system can form images of.

A person seen primarily or solely as sexually attractive.

(accounting) The purpose for which costs are measured.

(linguistics) A control verb whose shared object is not the subject.

(computing) The output of a compiler or assembler; it is not necessarily executable directly without linking to other modules

(mathematics) A function to be maximized or minimized in optimization theory.

(astronomy, astrology) Synonym of celestial body.