An Etymological Dictionary of Astronomy and Astrophysics
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Describing something that involves mutual relations between systems.

→ inter-; → system.

A → radiationless relaxation process in which a molecule in some excited → electronic state converts to a state of different spin → multiplicity. Intersystem crossing is analogous to → internal conversion.

→ intersystem; → crossing.

In spectroscopy, same as → semi-forbidden line.

→ inter-; → system.