It is true that heat and acid can cause proteins to denature, which means that they lose their 3-dimensional shape. A cooked egg white that becomes opaque and solid is an example. When milk is treated with acid, the protein casein curdles into a solid and the whey separates, still liquid.
The noun TOCCATA has 1 sense: 1. a baroque musical composition (usually for a keyboard instrument) with full chords and rapid elaborate runs in a rhythmically free style. Familiarity information: TOCCATA used as a noun is very rare.
2. fermata - (music) a prolongation of unspecified length on a note or chord or rest. protraction, lengthiness, prolongation, continuation-the consequence of being lengthened in duration. music-an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner.