A variant or shortened form referring to a corolla, the ring of petals in a flower.
Shortened or variant form of corolla, from Latin corolla meaning small crown; used in botanical contexts as a condensed version of the fuller term.
Botanists love creating shorthand versions of technical terms, and corol shows how a single syllable can replace a longer word—though this particular abbreviation hasn't stuck around as much as others in modern botany.
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