elastic

In trumpets for assisting the hearing, all reverbation of the trumpet must be avoided. It must be made thick, of the least elastic materials, and covered with cloth externally. For all reverbation lasts for a short time, and produces new sounds which mix with those which are coming in.

elastic band

Demand for entertainment is more elastic than demand for energy.

He could see that she was tastefully, though not richly, dressed, and that she walked with an elastic step that revealed a light heart and the vigor of perfect health. Her face, of course, he could not analyze, since he had caught only the one brief but convincing glimpse of it.

It was now about six o'clock, and that first freshness was on the air, which is to the day what youth is to life,—so light, so elastic, so sweet, and so brief:...

elastic spirits; an elastic constitution