Etymology
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Pianola (n.)

c. 1896, trademark name (1901) of a mechanical player-piano device using perforated rolls of paper, from piano, the ending perhaps abstracted from viola and meant as a diminutive suffix. The pianola's popularity led to a rash of product names ending in -ola, especially Victrola (q.v.), and slang words such as payola. Related: Pianolist.

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Definitions of Pianola

Pianola (n.)
a mechanically operated piano that uses a roll of perforated paper to activate the keys;
Synonyms: mechanical piano / player piano
From wordnet.princeton.edu