Expression

Expression may refer to:

Symbolic expression

• Expression (language), a thought communicated by language
• Expression (mathematics), a finite combination of symbols that are well-formed according to applicable rules
• Expression (programming), an instruction to execute something that will return a value
• Regular expression, a means of matching strings of text in computing
• Expression marks, (music) notating the musical dynamics

Bodily expression

• The expression of milk
• 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

Product names

• Expression (album), an album by John Coltrane
• Expression crew, a breakdance crew.
• 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