レイリー数すうalso: レーリーすうMeanings1nounRayleigh numberphysicsA dimensionless number used in fluid mechanics to predict the onset of convection. Technical term in physics.レイリー数すうが臨りん界かい値ちを超こえると対たい流りゅうが始はじまる。Convection begins when the Rayleigh number exceeds the critical value.
