impression

noun

psychology
mental image, understanding, notion
indentation in a surface matching a pressed object

Wiktionary

Pronunciation: /ɪmˈpɹɛʃn̩/

noun

Etymology: Etymology tree Proto-Indo-European *h₁én Proto-Italic *en Proto-Italic *en- Latin in- Proto-Indo-European *per-? Proto-Indo-European *pres-der. Proto-Italic *pres- Latin premō Latin imprimō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin impressiōder. Old French impressionder. English impression From Old French impression, from Latin impressio. Equivalent to impress + -ion.

The indentation or depression made by the pressure of one object on or into another.
“His head made an impression on the pillow.”
The overall effect of something, e.g., on a person.
“He tried to make a good impression on his parents.”
“Their empires, triumphs, conquests, and projects, have left little impression behind them, notwithstanding the attention they once attracted, and the violent convulsions which they caused in the state of the world.”
A vague recalling of an event, a belief.
“I have the impression that he's already left for Paris.”
An impersonation, an imitation of the mannerisms of another person.
An outward appearance.
A performance metric representing an instance where a post or ad is shown once.
“Publishers are paid for each ad impression their site generates.”
The first coat of colour, such as the priming in house-painting etc.
A print on paper from a wood block, metal plate, etc.
The vivid perception of something as it is experienced, in contrast to ideas or thoughts drawn from memory or the imagination.
“Let us, therefore, use a little freedom, and call them Impressions; employing that word in a sense somewhat different from the usual. By the term impression, then, I mean all our more lively perceptions, when we hear, or see, or feel, or love, or hate, or desire, or will. And impressions are distinguished from ideas, which are the less lively perceptions, of which we are conscious, when we reflect on any of those sensations or movements above mentioned.”
set of copies of a publication printed at one time having the same content, layout, pagination, etc.

verb

To manipulate a blank key within a lock so as to mark it with impressions of the shape of the lock, which facilitates creation of a duplicate key.
“The trick in impressioning a key is to remove only a small amount of the blank, by filing or cutting, from the pin positions where impressions have been left.”