second messenger

noun

Any substance used to transmit a signal within a cell, especially one which triggers a cascade of events by activating cellular components

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Meanings

nounsecond messenger (plural second messengers)

plural second messengers

  1. biochemistryAny substance used to transmit a signal within a cell, especially one which triggers a cascade of events by activating cellular components
Cite this entry
APA

second messenger. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/second%20messenger

MLA

“second messenger.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/second%20messenger. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “second messenger,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/second%20messenger.

Source: second messenger on Wiktionary, CC BY-SA 4.0.