Plural of corymb; multiple flat-topped flower clusters where all the flowers reach approximately the same height.
From corymb (Greek korymbe) plus English plural -s. The singular was borrowed from Greek via Latin into botanical Latin, then into modern scientific English.
Corymbs are so common in flowering plants that they gave rise to an entire family name: the Apiaceae (carrot/parsnip family) is often called 'the umbellifers' because their flowers typically form corymbs and umbels. One flower cluster type literally created a family identity.
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