musica ficta

[ myoo-zi-kuh fik-tuh; Latin moo-si-kah fik-tah ]
/ ˈmyu zɪ kə ˈfɪk tə; Latin ˈmu sɪˌkɑ ˈfɪk tɑ /

noun

the use of chromatically altered tones in the contrapuntal music of the 10th to the 16th centuries.
Also mu·si·ca fal·sa [myoo-zi-kuh fawl-suh; Latin moo-si-kah fahl-sah] /ˈmyu zɪ kə ˈfɔl sə; Latin ˈmu sɪˌkɑ ˈfɑl sɑ/.

Origin of musica ficta

First recorded in 1795–1805, musica ficta is from the Medieval Latin word mūsica ficta, literally, fashioned music