Bent or curved in two directions; having two flexures or bends.
From Latin 'bi-' (two) plus 'flectere' (to bend), with the past participle suffix '-ed.' Used in mathematics and anatomy to describe structures with two distinct curves.
Your spine is naturally 'biflected'—it has curves in different directions, and those two bends actually make it much stronger than if it were just straight, which is why scoliosis is such a problem.
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