Definition of second messenger in English:

second messenger

Syllabification: sec·ond mes·sen·ger


  • A substance whose release within a cell is promoted by a hormone and that brings about a response by the cell.
    More example sentences
    • Fatty acids function as second messengers and coregulators of gene transcription.
    • Examples of proteins and second messengers that appear to act in multiple response pathways are also described.
    • This enzyme is abundantly expressed in the lung tissue and thereby stabilizes the second messenger.

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Word of the day skosh
Pronunciation: skōSH
a small amount; a little