Describing a leaf divided nearly to the midrib in a bipinnate pattern, with segments that are themselves similarly divided.
From 'bi-' (twice), 'pinnate,' 'parted' (from Latin 'partire,' to divide). A highly technical botanical term combining multiple Latin roots.
This is botanical description at its most precise—each term ('bi-,' '-pinnate,' '-parted') adds a layer of specificity, allowing botanists to communicate exactly how a leaf is divided without drawing a picture.
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