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.
Definition of vibrato for English Language Learners. music : a way of making small, rapid changes in a musical note that you are singing or playing so that it seems to shake slightly. See words that rhyme with vibrato Britannica.com: Encyclopedia article about vibrato.