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blade science definition
- a. The expanded part of a leaf or petal. Also called lamina. See more at leaf.b. The leaf of grasses and similar plants.
- A stone tool consisting of a slender, sharp-edged, unserrated flake that is at least twice as long as it is wide. Blade tools were developed late in the stone tool tradition, after core and flake tools, and were probably used especially as knives.
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