IPA: /səˈnɑːtɪnə/
KK: /səˈnɑːtɪnə/
A short musical composition, typically for a solo instrument, that is less complex than a sonata.
The pianist played a beautiful sonatina that captivated the audience.
Sonatina is formed from "sonare" (meaning to sound) and the diminutive suffix "-ina" (indicating small or lesser). The word refers to a small or light sonata, typically for piano, that is less complex than a full sonata.
Think of 'sounding' ('sonare') in a 'smaller' form ('-ina') — that's why a sonatina is a smaller version of a sonata.