hidden variable

noun

UK /ˌhɪd.ən ˈveə.ri.ə.bəl/

US /ˌhɪd.ən ˈver.i.ə.bəl/

A hidden variable is something secret that changes and affects what happens, even though you cannot see it.

The scientist said a hidden variable might explain why the experiment gave different results each time.

SYNONYMS

secret factor unknown factor concealed element invisible cause latent variable

RELATED WORDS

variable factor parameter uncertainty cause

OTHER MEANINGS

2. In physics, a hidden variable is an unseen property that some theories say decides how particles behave.

Einstein hoped hidden variables would make quantum results predictable.

3. In statistics, a hidden variable is a factor you did not measure but that still affects your data.

The study missed a hidden variable, like how much sleep the students got.

4. In everyday talk, a hidden variable is a secret reason that changes an outcome.

The hidden variable in the game was the windy weather.