macroscopicities

Noun

macroscopicity (countable and uncountable, plural macroscopicities)

1. (uncountable) The quality or state of being macroscopic.
   • ...it appears to be a small step from (1) and (2) to the identification of a sufficiently large mass with a macroscopic mass and, by analogy, to the consideration as macroscopic any system having sufficiently large quantum numbers associated with it, as well as to accept such macroscopicity as...2014 September, Gregg Jaeger, “What in the (quantum) world is macroscopic?”, in American Journal of Physics, volume 82, number 9, pages 896–905
2. (countable, quantum mechanics) A formal measure of the size of a quantum mechanical system or experiment which, while typically larger than the atomic scale, has not undergone decoherence.
   • Macroscopicities of a representative selection of quantum superposition experiments with mechanical systems plotted against their publication date (adapted from [17] with additional data).2014, Stefan Nimmrichter, Macroscopic Matter-Wave Interferometry, Springer, page 230