D defs.my
Entry 1 sense Webster, 1913

Appoggiatura

· Ap·pog·gia·tu·ra · IPA /əˌpɒ.d͡ʒəˈtʊɹ.ə/
01 n. A passing tone preceding an essential tone, and borrowing the time it occupies from that; a short auxiliary or grace note one degree above …
  1. 1.
    A passing tone preceding an essential tone, and borrowing the time it occupies from that; a short auxiliary or grace note one degree above or below the principal note unless it be of the same harmony; -- generally indicated by a note of smaller size, as in the illustration above. It forms no essential part of the harmony.(Mus.)