Definition of mean proportional in English:

mean proportional

noun

Mathematics Geometry
  • A quantity related to two given quantities in such a way that dividing it by the smaller gives the same result as dividing the larger by it; the geometric mean of two quantities.

Origin

Late Middle English; earliest use found in Art Nombryng. Originally from mean + proportional; later reinterpreted as from mean + proportional.

Pronunciation

mean proportional

/ˌmiːn prəˈpɔːʃ(ə)n(ə)l/ /ˌmiːn prəˈpɔːʃən(ə)l/