(grammar) A pronoun that is used as the object of a sentence, such as "me", "him" or "us" in English.

(grammar) the form of a noun or pronoun used as the object of a verb or a preposition.

A natural object, or one manufactured for some other purpose, considered as a work of art.

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

plural of object finder

A vital principle attributed by the primitive mind to inanimate objects.

plural of object-soul

A device in microscopes for locating an object in the field before examination at higher magnification.

(category theory) Given a category C, any object X ∈ C on which morphisms are defined corresponding to the group theoretic concepts of a binary operation (called multiplication), identity and inverse, such that multiplication is associative and properties are satisfied that correspond to the existence of inverse elements and the identity element.

(grammar) In some languages, e.g. in Finnish, an object that indicates completed action, as opposed to partial object that indicates incomplete action.