Having two circles; relating to or composed of two circular shapes or forms.
From 'bi-' meaning two, combined with 'circular' (from Latin 'circus' meaning circle). This geometric term developed as mathematicians and architects needed to describe complex shapes.
A bicircular design appears in many ancient symbols and mandalas—two overlapping circles create a shape called a vesica piscis that mathematically creates all sorts of interesting ratios that artists and architects have used for thousands of years!
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