pi ‧ a ‧ nis ‧ si ‧ mo /ˌpiːəˈnɪsəməʊ, ˌpiːəˈnɪsɪməʊ $ -moʊ/ BrE AmE adjective , adverb technical
[ Date: 1700-1800 ; Language: Italian ; Origin: 'very quiet' ]
played or sung very quietly OPP fortissimo
pi ‧ a ‧ nis ‧ si ‧ mo /ˌpiːəˈnɪsəməʊ, ˌpiːəˈnɪsɪməʊ $ -moʊ/ BrE AmE adjective , adverb technical
[ Date: 1700-1800 ; Language: Italian ; Origin: 'very quiet' ]
played or sung very quietly OPP fortissimo
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012