expression

noun

ex·​pres·​sion ik-ˈspre-shən 

1

a

: an act, process, or instance of representing in a medium (such as words) : utterance

freedom of expression

b(1)

: something that manifests, embodies, or symbolizes something else

this gift is an expression of my admiration for you

(2)

: a significant word or phrase

(3)

: a mathematical or logical symbol or a meaningful combination of symbols

(4)

: the detectable effect of a gene

also : expressivity sense 1

2

a

: a mode, means, or use of significant representation or symbolism

especially : felicitous or vivid indication or depiction of mood or sentiment

read the poem with expression

b(1)

: the quality or fact of being expressive

(2)

: facial aspect or vocal intonation as indicative of feeling

3

: an act or product of pressing out

expressional

ik-ˈspre-sh(ə-)nəl 

adjective

Synonyms

• voice
• formulation
• wording

Examples of expression in a Sentence

Dance is a form of artistic expression.

He uses some very odd expressions.

The expression “to make fun of” means “to ridicule.”

Judging from her expression, I think the gift was a complete surprise.

We saw his expression change from angry to sad.

She wore a smug expression.

Recent Examples on the Web

His wife, Becca (Connie Nielsen), wears an expression of perpetual disappointment. —David Fear, Rolling Stone, 14 Aug. 2025

Open Doors, the Locarno Film Festival’s Locarno Pro-organized co-production platform and talent development program for filmmakers from regions where artistic expression is at risk, has wrapped up its 23rd edition with a focus on the African continent. —Georg Szalai, HollywoodReporter, 12 Aug. 2025

And thus, Season 3 ends on Bertha’s devastated expression. —Ben Travers, IndieWire, 11 Aug. 2025

The episode ends on her frozen expression, setting up the fallout for season 4. —Emily Blackwood, People.com, 11 Aug. 2025

Word History

First Known Use

15th century, in the meaning defined at sense 1a

Phrases Containing expression

• find expression
• freedom of expression
• gender expression
• give expression to
• re-expression
• self-expression

Rhymes for expression

• accession
• aggression
• compression
• concession
• confession
• depression
• digression
• discretion
• impression
• obsession
• oppression
• possession

Kids Definition

expression

noun

ex·​pres·​sion ik-ˈspresh-ən 

1

: the act or process of expressing especially in words

2

a

: a meaningful word or phrase

b

: a mathematical or logical symbol or a combination of symbols and signs representing a quantity or operation

3

: a way of speaking or singing or of playing an instrument so as to show mood or feeling

sing with expression

4

: the way one's face looks or one's voice sounds that shows one's feelings

a pleased expression

5

: the detectable effect of a gene

expressionless

-ləs

adjective

expressionlessly adverb

expressionlessness noun

Medical Definition

expression

noun

ex·​pres·​sion ik-ˈspresh-ən 

1

a

: something that manifests, represents, reflects, embodies, or symbolizes something else

the first clinical expression of a disease

b(1)

: the detectable effect of a gene

also : the sum of the processes (as transcription and translation) by which a gene is manifested in the phenotype

gene expression can be controlled by regulatory proteins that bind to specific sites on DNA

—Mark Ptashne

(2)

: expressivity

2

: facial aspect or vocal intonation as indicative of feeling

3

: an act or product of pressing out

Legal Definition

expression

noun

ex·​pres·​sion

1

: an act, process, or instance of representing or conveying in words or some other medium : speech

protected expression under the First Amendment

2

: a mode or means of expressing an idea, opinion, or thought

Note: An expression is protectible under copyright law, but an idea is not.