https://doi.org/10.1351/goldbook.H02792
The class of @H02799@ derived from @H02791@ by removal of a hydrogen atom from any ring atom; an alternative term is hetaryl. E.g.
H02792.png
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1340 [Terms] [Paper]