Fondu Ballet GlossaryJacklyn DoughertySep 3, 20221 min readPhoto Credit Jacklyn DoughertyFondu, fondue [faum-DEW ]. Sinking down. 1) Ballet term used to describe the lowering of the body. Dancers lower the body, by bending the knee of the supporting leg. 2) Fondu is the ending of a step when the working leg is placed on the ground with a soft and gradual movement.