(physics) A minor stable isotope of calcium, ⁴³₂₀Ca, having twenty protons and twenty-three neutrons; it amounts to about 0.1% of the element in nature

(music, lutherie, bowmaking) The metal slide attached to the frog and sitting between the frog and the stick of a bow.

One who practices ethnography.

Relating to, or characteristic of, a prehistoric culture of coastal Peru and Chile / Near or surrounding the gonads (in the embryos of some fish) / Alternative spelling of epigonic