spiro-annulated

Questions

What does spiro-annulated mean?

Describing two rings that are joined, via a single atom, to form a spiro compound.

Where does spiro-annulated come from?

Etymology tree Proto-Indo-European *sper- Proto-Indo-European *sper-yeh₂- Ancient Greek σπεῖρα (speîra)der. Latin spīra Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- English spiro- English annulated English spiro-annulated From spiro- + annulated.

How to pronounce spiro-annulated

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