preatomic
adjective
pre·atom·ic
ˌprē-ə-ˈtä-mik 
: of or relating to a time before the use of the atomic bomb and atomic energy
Dictionary Entries Near preatomic
Cite this Entry
“Preatomic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/preatomic. Accessed 21 Dec. 2024.
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