annulation

noun — 3 senses

annulation

noun

/ˌænjʊˈleɪʃən/ · /ˌænjəˈleɪʃən/

Etymology From Latin annulātus + -ation. Compare French annulation. Piecewise doublet of annullation.

1

The formation of a ring

2

Chemistry, Natural sciences, Organic chemistry, Physical sciences Any reaction that forms a ring of atoms

3

Any structure in the form of a ring

Derived terms: benzannulation, benzoannulation, cyclobutannulation, cycloheptannulation, cyclohexannulation, cyclooctannulation, cyclopentannulation, cyclopropannulation, photoannulation, transannulation

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.