: the period in the cell cycle from the end of cell division to the beginning of DNA replication compare g2 phase, m phase, s phase

Word History

Etymology

growth

First Known Use

1966, in the meaning defined above

Time Traveler
The first known use of G1 phase was in 1966

Browse Nearby Words

g

Cite this Entry

“G1 phase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/G1%20phase. Accessed 3 Mar. 2025.

Medical Definition

G1 phase

noun
: the period in the cell cycle from the end of cell division to the beginning of DNA replication compare g2 phase, m phase, s phase
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