<computer programming> In subject-oriented programming, a subject is a collection of classes or class fragments whose class hierarchy models its domain in its own, subjective way. A subject may be a complete application in itself, or it may be an incomplete fragment that must be composed with other subjects to produce a complete application. Subject composition combines class hierarchies to produce new subjects that incorporate functionality from existing subjects.

(01 Apr 1999)

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1. That which is placed under the authority, dominion, control, or influence of something else.

2. Specifically: One who is under the authority of a ruler and is governed by his laws; one who owes allegiance to a sovereign or a sovereign state; as, a subject of Queen Victoria; a British subject; a subject of the United States. "Was never subject longed to be a king, As I do long and wish to be a subject." (Shak) "The subject must obey his prince, because God commands it, human laws require it." (Swift)

In international law, the term subject is convertible with citizen.

3. <anatomy> That which is subjected, or submitted to, any physical operation or process; specifically, a dead body used for the purpose of dissection.

4. That which is brought under thought or examination; that which is taken up for discussion, or concerning which anything is said or done. "This subject for heroic song." "Make choice of a subject, beautiful and noble, which . . . Shall afford an ample field of matter wherein to expatiate." (Dryden) "The unhappy subject of these quarrels." (Shak)

5. The person who is treated of; the hero of a piece; the chief character. "Writers of particular lives . . . Are apt to be prejudiced in favor of their subject." (C. Middleton)

6. That of which anything is affirmed or predicated; the theme of a proposition or discourse; that which is spoken of; as, the nominative case is the subject of the verb. "The subject of a proposition is that concerning which anything is affirmed or denied." (I. Watts)

7. That in which any quality, attribute, or relation, whether spiritual or material, inheres, or to which any of these appertain; substance; substratum. "That which manifests its qualities in other words, that in which the appearing causes inhere, that to which they belong is called their subject or substance, or substratum." (Sir W. Hamilton)

8. Hence, that substance or being which is conscious of its own operations; the mind; the thinking agent or principal; the ego. Cf. Object. "The philosophers of mind have, in a manner, usurped and appropriated this expression to themselves. Accordingly, in their hands, the phrases conscious or thinking subject, and subject, mean precisely the same thing." (Sir W. Hamilton)

9. The principal theme, or leading thought or phrase, on which a composition or a movement is based. "The earliest known form of subject is the ecclesiastical cantus firmus, or plain song." (Rockstro)

10. The incident, scene, figure, group, etc, which it is the aim of the artist to represent.

Origin: From L. Subjectus, through an old form of F. Sujet. See Subject.

(01 Mar 1998)

subinvolution, subiodide, subjacent, subject < Prev | Next > subject-based, subject headings, subject index

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