Having two rows of saw-like teeth or serrations; doubly serrated.
From Latin 'bi-' (two) and 'serratus' (saw-toothed). Used in botanical terminology to describe leaves with a distinctive double-serrated edge.
Some plant leaves have edges that look like they've been cut with two different saws at once—the Latin term 'biserrate' perfectly describes this intricate pattern that botanists need to identify species accurately.
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