Expression

Expression may refer to:

Linguistics

 * Expression (linguistics), a word, phrase, or sentence
 * Expression (mathematics), a formula that represents a mathematical object
 * Fixed expression, a form of words with a specific meaning
 * Idiom, a type of fixed expression
 * Metaphorical expression, a particular word, phrase, or form of words that has a different meaning than its literal form
 * Expression (sign language), the expressions and postures of the face and body that contribute to the formation of words when signing

Symbolic expression

 * Expression (architecture), implies a clear and authentic displaying of the character or personality of an individual person
 * Expression (mathematics), a finite combination of symbols that are well-formed according to applicable rules
 * Expression (computer science), an instruction to execute something that will return a value
 * Regular expression, a means of matching strings of text in computing
 * Expression marks, in music, notating the musical dynamics
 * Symbolic computation expression
 * S-expression

Bodily expression

 * Expression of breast milk in breastfeeding
 * Emotional expression, verbal and non-verbal behaviour that communicates emotion
 * Facial expression, a movement of the face that conveys emotional state
 * Gene expression, the process by which information from a gene is used in biochemistry
 * The manual expression of pimples, also known as "pimple popping"

Product names

 * Expression (album), a 1967 album by John Coltrane
 * Expressions (Chick Corea album), a 1994 album by Chick Corea
 * Expressions (Sarah Geronimo album), 2013
 * Expressions, an album by Jon Secada
 * "Expression" (song), a song by Salt-n-Pepa
 * Expressions, the annual magazine of Vidyalankar Institute of Technology, Mumbai, India
 * Microsoft Expression Studio, a digital media and graphic design suite
 * Ex'pression College for Digital Arts, a college in Emeryville, California for the entertainment industry
 * The Expression (album)

Other

 * Musical expression
 * Method of obtaining (vegetable) οil by pressure extraction, such as Expeller pressing
 * Self-expression values