noun
spiro
SPIH-roh
noun
1
In chemistry, a compound made of two rings that share only a single connecting atom.
"The molecule has a spiro carbon joining its two ring systems."
How to Use Spiro
Learner’s notesIn plain EnglishA chemistry term for two rings in a molecule joined at just one atom.
Word Forms
Spiros plural
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The molecule has a _____ carbon joining its two ring systems.
Etymology
From Latin spīra, "coil, twist," reflecting the twisted, shared-atom shape of these ring structures.