doublefunction
nounUK /ˌdʌbəlˈfʌŋkʃən/
US /ˌdʌbəlˈfʌŋkʃən/
A doublefunction is when one thing does two jobs at the same time.
The sofa has a doublefunction because it is a bed too.
RELATED WORDS
OTHER MEANINGS
2. In math, a doublefunction is a rule that gives two answers for one input.
The teacher explained that a doublefunction can map one number to two results.
3. In biology, a doublefunction describes a body part that serves two different systems.
The tongue has a doublefunction in eating and in speaking.
4. In grammar, a doublefunction word can act as two parts of speech.
The word 'run' has a doublefunction as a noun and a verb.