Wiktionary
fountainheads
n. (plural of fountainhead English)
Usage examples of "fountainheads".
In science, analogies can be fountainheads of new ideas precisely because they use old, true ones in new ways.
The encyclical assumes that the unnamed, unrecognized, unacknowledged fountainheads of wealth would somehow continue to function—and proceeds to set up conditions of existence which would make their functioning impossible.
The ocean tossed, ripped into spume, and waves crashed against the shore, hurling fountainheads of spray.