A variant form of fluctisonant; sounding like waves or producing sounds similar to wave motion.
From Latin 'fluctus' (wave) plus '-sonous' (sounding), an alternate suffix to '-sonant'. Both forms are constructed identically to describe acoustic phenomena related to waves.
Fluctisonous and fluctisonant are basically the same rare word in two different forms—it's like having two names for the same obscure thing. Scholars apparently couldn't decide which suffix sounded better.
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