IPA: /ˌsaɪkloʊəˈdɪʃən/
KK: /sɪkloʊəˈdɪʃən/
A type of chemical reaction where two or more molecules combine to form a ring structure.
The chemist studied the cycloaddition process to create new compounds.
Cycloaddition → It is formed from "cyclo-" (from Greek "kyklos", meaning circle) and "addition" (from Latin "additio", meaning to add). The term describes a chemical reaction where two or more molecules combine to form a cyclic structure, thus creating a circle through the process of addition.
Think of 'circle' ('cyclo-') being formed by 'adding' ('addition') molecules together — that's what cycloaddition means.
No commonly confused words.