Janus green


: a basic azine dye used especially as a vital biological stain (as for mitochondria)

Word History


probably from Janus, a trademark

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of Janus green was in 1898

Dictionary Entries Near Janus green

Cite this Entry

“Janus green.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Janus%20green. Accessed 24 Mar. 2023.

Medical Definition

Janus green

Ja·​nus green ˈjā-nəs-ˈgrēn How to pronounce Janus green (audio)
: a basic azine dye used especially as a biological stain (as for mitochondria)
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