Having a scalloped or finely notched edge, like the rim of a seashell with tiny bumps.
From Latin 'crenulatus,' derived from 'crenula' (small notch). The suffix '-ate' indicates the quality or condition of having these features.
Botanists use 'crenulate' to describe leaves with tiny scalloped edges—it's one of the most common leaf margin descriptions because so many plants have evolved this defensive texture!
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