Noun	1.	idea - the content of cognition; the main thing you are thinking about; "it was not a good idea"; "the thought never entered my mind" Synonyms: thought
	2.	idea - a personal view; "he has an idea that we don't like him"
	3.	idea - an approximate calculation of quantity or degree or worth; "an estimate of what it would cost"; "a rough idea how long it would take" Synonyms: approximation, estimate, estimation
	4.	idea - your intention; what you intend to do; "he had in mind to see his old teacher"; "the idea of the game is to capture all the pieces" Synonyms: mind
	5.	idea - (music) melodic subject of a musical composition; "the theme is announced in the first measures"; "the accompanist picked up the idea and elaborated it" Synonyms: melodic theme, musical theme, theme

1.	(language)	IDEA - Interactive Data Entry/Access.
2.	(algorithm)	IDEA - International Data Encryption Algorithm.

Internet Design, Engineering, and Analysis notes (IETF)abstract thought, act of thought, admonition, advice, advising, advocacy, affective meaning, aim, ambition, animus, apprehension, approach, approximation, arrangement, aspiration, assumption, attack, attitude, awareness, bare suggestion, bearing, belief, blueprint, blueprinting, brainwork, briefing, calculation, cast, caution, caveat, cerebration, charting, climate of opinion, clue, cogitation, coloring, common belief, community sentiment, conceit, conceptualization, conclusion, connotation, consensus gentium, consequence, consideration, construct, consultation, contrivance, conviction, council, counsel, creative thought, dash, denotation, desideration, desideratum, design, desire, determination, device, direction, disposition, doctrine, dream, drift, effect, end, enterprise, envisagement, essence, estimate, estimation, ethos, excogitation, excuse, exhortation, explanation, expostulation, extension, eye, fancy, fantasy, feeling, figuring, fixed purpose, force, foresight, forethought, function, game, general belief, gist, gleam, goal, grammatical meaning, graphing, ground plan, guess, guidance, guidelines, half an idea, hazy idea, headwork, heavy thinking, hint, hortation, hypothesis, ideation, imageless thought, impact, implication, import, impression, inkling, instruction, intellection, intellectual exercise, intellectualization, intendment, intension, intent, intention, intimation, judgment, layout, lexical meaning, lick, lights, lineup, literal meaning, long-range plan, look, mapping, master plan, meaning, mental act, mental image, mental labor, mental process, mentation, mere notion, method, methodology, mind, monition, motive, mystique, nisus, noesis, objective, observation, operations research, organization, outlook, overtone, parley, perception, personal judgment, pertinence, philosophy, picture, pith, plan, planning, planning function, point, point of view, popular belief, position, posture, practical consequence, prearrangement, presumption, pretense, pretext, prevailing belief, principle, procedure, program, program of action, project, proposal, prospectus, public belief, public opinion, purport, purpose, raison d'etre, range of meaning, ratiocination, rational ground, rationale, rationalization, reaction, real meaning, reason, reason for, reason why, reasoning, recommendation, reference, referent, relation, relevance, remonstrance, resolution, resolve, sake, schedule, schema, schematism, schematization, scheme, scheme of arrangement, scintilla, scope, semantic cluster, semantic field, sense, setup, shade, shadow, sight, significance, signification, significatum, signifie, sip, smack, smattering, smell, sneaking suspicion, soupcon, span of meaning, spark, spirit, sprinkling, stance, stated cause, straight thinking, strategic plan, strategy, striving, structural meaning, study, substance, suggestion, sum, sum and substance, sup, suspicion, symbolic meaning, system, systematization, tactical plan, tactics, taste, tenet, tenor, the big idea, the big picture, the idea, the picture, the whatfor, the wherefore, the why, theory, thinking, thinking aloud, thinking out, tincture, tinge, totality of associations, touch, trace, transferred meaning, unadorned meaning, underlying reason, understanding, undertone, vague idea, value, view, viewpoint, warning, way, way of thinking, will, working plan