In zoology and botany, having two spurs or spur-like projections (calcar = spur).
From bi- (two) + calcarate (having calcars/spurs, from Latin calcaria, a spur). This anatomical or botanical descriptor precisely marks structures with exactly two sharp projections.
This technical term perfectly shows how naturalists could describe animal and plant structures with surgical precision—imagine being able to classify insects just by counting their spurs, which is exactly what bicalcarate lets you do.
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