spumescent
\ spyoo-MES-uhnt \ , adjective;
1.foamy; foamlike; frothy.
Quotes:
Within the mud and rock enclave, a waterfall, clear and spumescent , cascades forcefully down one side.
-- Susan Mann, "One Tongue Singing" , 2004
The usually gentle waterfall, clearly visible in the moonlight and icily shimmering, had been transformed into a phenomenal spumescent cascade that was magnificent yet uncanny in its magnitude.
-- Barbara Taylor Bradford, "A Woman of Substance" , 1979
Origin:
Spumescent entered English in the mid-1800s. It came from the Latin word spūma which meant "foam" along with suffix -escent which is added to adjectives borrowed from Latin.
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