time constant

Fetched 2026-10-26 (cache).

Synonyms: time constants, prime constant

Antonyms: time constants, prime constant

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|mathematics}} A characteristic of an [[exponential function]], represented by ''τ'' in the function:
2. {{lb|en|physics}} The time in which a physical system's response to a step-wise change in an external variable reaches approximately 63% of its final ([[asymptotic]]) value.
3. For radioactivity: the [[decay constant]].

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