geminal

adjective
gem·​i·​nal | \ˈje-mə-nᵊl \

Definition of geminal 

: relating to or characterized by two usually similar substituents on the same atom

Other Words from geminal

geminally \ˈje-​mə-​-​nᵊl-​ē \ adverb

First Known Use of geminal

1967, in the meaning defined above

History and Etymology for geminal

Latin geminus twin

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The first known use of geminal was in 1967

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