Having the shape or form of a calyptra; cap-shaped or resembling a protective veil-like covering.
From Greek kalyptra (cap, veil) plus Latin -form (shape), meaning literally 'cap-shaped.' Used in botanical and zoological description since the 19th century.
This descriptive term shows how nature repeats designs—a cap-like shape appears in root tips, sea snail shells, flower buds, and insect parts because it's an efficient evolutionary solution for protection and growth!
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