Etymology
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dentate (adj.)

"toothed, having tooth-like projections, notched," 1770, from Latin dentatus "toothed, having teeth," from dens (genitive dentis) "tooth," from PIE root *dent- "tooth." Related: Dentation (1802).

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Definitions of dentate

dentate (adj.)
having toothlike projections in the margin;
From wordnet.princeton.edu