- The definition of an idea is a thought, belief, opinion or plan.
An example of idea is a chef coming up with a new menu item.
- something one thinks, knows, or imagines; a thought; mental conception or image; notion
- an opinion or belief
- a plan; scheme; project; intention; aim
- a hazy perception; vague impression; fanciful notion; inkling
- meaning or significance
- Music a theme or figure
- Philos. according to Plato, any of the unchanging, eternal, intelligible models or archetypes of which all material things are only imperfect imitations and from which their existence derives: in modern philosophy, used variously to mean the immediate object of thought, absolute truth, etc.
Origin of ideaClassical Latin ; from Classical Greek form or appearance of a thing as opposed to its reality ; from Indo-European an unverified form widswo- ; from base an unverified form weid-, to see, know from source Classical Latin videre, to see, Classical Greek idein, to see, Old English witan, to know
- Something, such as a thought or conception, that is the product of mental activity.
- An opinion, conviction, or principle: has some strange political ideas.
- A plan, purpose, or goal: She started school with the idea of becoming a doctor.
- The gist or significance: The idea of the article is that investing in green technology can save you money in the long run.
- A sense that something can happen; a notion or expectation: They have this idea that we can just drop what we're doing and go to the park.
- Music A theme or motif.
- Philosophy a. In the philosophy of Plato, an archetype of which a corresponding being in phenomenal reality is an imperfect replica.b. In the philosophy of Kant, a concept of reason that is transcendent but nonempirical.c. In the philosophy of Hegel, absolute truth; the complete and ultimate product of reason.
- Obsolete A mental image of something remembered.
Origin of ideaMiddle English, from Latin, from Greek; see weid- in Indo-European roots.
(plural ideas or ideæ)
- (philosophy) An abstract archetype of a given thing, compared to which real-life examples are seen as imperfect approximations; pure essence, as opposed to actual examples. [from 14th c.]
- An image of an object that is formed in the mind or recalled by the memory. [from 16th c.]
- The mere idea of you is enough to excite me.
- More generally, any result of mental activity; a thought, a notion; a way of thinking. [from 17th c.]
- A conception in the mind of something to be done; a plan for doing something, an intention. [from 17th c.]
- I have an idea of how we might escape.
- A vague or fanciful notion; a feeling or hunch; an impression. [from 17th c.]
- He had the wild idea that if he leant forward a little, he might be able to touch the mountain-top.
- (music) A musical theme or melodic subject. [from 18th c.]
- aide, daie
From Latin idea (“a (Platonic) idea; archetype”), from Ancient Greek ἰδέα (idéa, “notion, pattern”), from εἴδω (eidō, “I see”), cognate with French ideé.
idea - Computer Definition
(International Data Encryption Algorithm) A secret key cryptography method that uses a 128-bit key. Introduced in 1992, its European patent is held by Ascom-Tech AG, Solothurn, Switzerland. Written by Xuejia Lai and James Massey, it uses the block cipher method that breaks the text into 64-bit blocks before encrypting them. See PGP.