input

American  

[in-poot] / ˈɪnˌpʊt /

noun

1. something that is put in.

2. the act or process of putting in.

3. the power or energy supplied to a machine.

4. the current or voltage applied to an electric or electronic circuit or device.

5. Computers.

   1. data to be entered into a computer for processing.

   2. the process of introducing data into the internal storage of a computer.

6. contribution of information, ideas, opinions, or the like.

   Before making a decision we need your input.

7. the available data for solving a technical problem.

8. Scot. a monetary contribution, as to charity.

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adjective

1. of or relating to data or equipment used for input.

   The goal is to reduce input costs.

verb (used with object)

inputted, input, inputting

1. Computers. to enter (data) into a computer for processing.

2. to contribute (ideas, information, or suggestions) to a project, discussion, etc.

input British  

/ ˈɪnˌpʊt /

noun

1. the act of putting in

2. that which is put in

3. (often plural) a resource required for industrial production, such as capital goods, labour services, raw materials, etc

4. electronics

   1. the signal or current fed into a component or circuit

   2. the terminals, or some other point, to which the signal is applied

5. computing the data fed into a computer from a peripheral device

6. (modifier) of or relating to electronic, computer, or other input

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verb

1. (tr) to insert (data) into a computer

Etymology

Origin of input

First recorded in 1745–55; in- ¹ + put

Explanation

Input is that which is, well, put in—whether literally, as in "the input from the guitar to the speaker," or more conceptually, as in "the group leader wanted everybody's input." The verb input, in the computer sense, didn't exist much before the late 1940's when it became common among computer professionals, who input data into their machines. Why they weren't satisfied just to "put in" the data, we may never know. Before that, the noun input was an economic term meaning anything that went into production: the grain was just one input among several required for the production of cereal. But often, these days, input means a contribution of some kind, usually a thought. You'll thank me for my input later.

Example Sentences

Urea, the key input for fertiliser, has doubled in price.

From BBC • Apr. 18, 2026

“The combination of soft grain prices, elevated input costs … and elevated fuel is a margin story, not a revenue story,” he said.

From MarketWatch • Apr. 17, 2026

Refinery capacity use fell by 2.4 percentage points to 89.6%, with crude input to refineries down by 208,000 barrels a day at 16 million barrels.

From The Wall Street Journal • Apr. 15, 2026

The input data must be trusted, the AI tools must be transparent, and a human needs to be in the loop.

From Barron's • Apr. 10, 2026

Steadying myself, I input the code and disabled the electricity.

From "Endangered" by Eliot Schrefer

Related Words

• aid
• consultation
• encouragement
• guidance
• help
• information
• instruction
• judgment
• lesson
• news
• opinion
• prescription
• proposal
• recommendation
• suggestion
• tip
• view
• warning
• word