remontant

a.[ F. ] (Hort.) Rising again; -- applied to a class of roses which bloom more than once in a season; the hybrid perpetual roses, of which the Jacqueminot is a well-known example. [ 1913 Webster ]

a. [ L. resonans, p. pr. of resonare to resound: cf. F. résonnant. See Resound. ] 1. Returning, or capable of returning, sound; fitted to resound; resounding; echoing back. [ 1913 Webster ]

Through every hour of the golden morning, the streets were resonant with female parties of young and old. De Quincey. [ 1913 Webster ]

2. (Elec.) Adjusted as to dimensions (as an electric circuit) so that currents or electric surgings are produced by the passage of electric waves of a given frequency. [ Webster 1913 Suppl. ]