from its having been the 606th compound tested and introduced by Paul Ehrlich †1915
1910, in the meaning defined above
sixmo
six-o-six
six-pack
“Six-o-six.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/six-o-six. Accessed 28 Nov. 2024.
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