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.

Primary Meanings of input

signal going into an electronic system
enter (data or a program) into a computer
a statement that expresses a personal opinion or belief or adds information
Full Definitions of input

n signal going into an electronic system

input signal
Type of:
sign, signal, signaling
any nonverbal action or gesture that encodes a message

n a component of production; something that goes into the production of output

Type of:
component, constituent, element
an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system

v enter (data or a program) into a computer

Type of:
enter, infix, insert, introduce
put or introduce into something

n a statement that expresses a personal opinion or belief or adds information

comment, remark
Parkinson's law
C. Northcote Parkinson's cynical observation that the number of subordinates in an organization will increase linearly regardless of the amount of work to be done
Parkinson's law
C. Northcote Parkinson's cynical observation that work will expand so as to fill the time available for its completion
show 16 types...
hide 16 types...
remark made spontaneously without prior preparation
a courteous or respectful or considerate remark
gambit, ploy
an opening remark intended to secure an advantage for the speaker
obiter dictum, passing comment
an incidental remark
mention, reference
a remark that calls attention to something or someone
observation, reflection, reflexion
a remark expressing careful consideration
a teasing remark
crack, quip, sally, wisecrack
witty remark
barb, dig, gibe, jibe, shaft, shot, slam
an aggressive remark directed at a person like a missile and intended to have a telling effect
conversation stopper, stopper
a remark to which there is no polite conversational reply
banality, bromide, cliche, commonplace, platitude
a trite or obvious remark
a striking or amusing or caustic remark
passing reference or indirect mention
reference to things past
the practice of casually mentioning important people in order to impress your listener
cheap shot
an unnecessarily aggressive and unfair remark directed at a defenseless person
Type of:
a message that is stated or declared; a communication (oral or written) setting forth particulars or facts etc

n any stimulating information or event; acts to arouse action

stimulant, stimulation, stimulus
show 17 types...
hide 17 types...
elicitation, evocation, induction
stimulation that calls up (draws forth) a particular class of behaviors
the sudden stimulation provided by strong drink (or certain drugs)
something causing excitement or stimulating interest
negative stimulation, turnoff
something causing antagonism or loss of interest
conditioned stimulus
the stimulus that is the occasion for a conditioned response
reinforcement, reinforcer, reinforcing stimulus
(psychology) a stimulus that strengthens or weakens the behavior that produced it
cue, discriminative stimulus
a stimulus that provides information about what to do
positive stimulus
a stimulus with desirable consequences
negative stimulus
a stimulus with undesirable consequences
positive reinforcer, positive reinforcing stimulus
a reinforcing stimulus that serves to increase the likelihood of the response that produces it
negative reinforcer, negative reinforcing stimulus
a reinforcing stimulus whose removal serves to decrease the likelihood of the response that produced it
bonus, fillip
anything that tends to arouse
delight, joy, pleasure
something or someone that provides a source of happiness
annoyance, bother, botheration, infliction, pain, pain in the ass, pain in the neck
something or someone that causes trouble; a source of unhappiness
aversive stimulus
any negative stimulus to which an organism will learn to make a response that avoids it
concern, headache, vexation, worry
something or someone that causes anxiety; a source of unhappiness
grief, sorrow
something that causes great unhappiness
Type of:
knowledge acquired through study or experience or instruction

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement.