Present tense third-person singular form: causes or undergoes conversion into a ring-shaped molecular structure.
From the base verb 'cyclize,' which combines cyclo- (Greek kyklos, 'circle') with the -ize suffix meaning 'to make or become.' Standard conjugation that emerged with organic chemistry terminology.
When a molecule cyclizes, it's like a string of beads connecting end-to-end to form a bracelet—it's the same atoms but now arranged in a completely different way that can do completely different things.
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