key signature

(Music) set of sharps or flats that follow the clef to indicate the key

For use in cryptography see Key signature (cryptography) In musical notation, a key signature is a series of sharp symbols or flat symbols placed on the staff, designating notes that are to be consistently played one semitone higher or lower than the equivalent natural notes (for example, the white notes on a piano keyboard) unless otherwise altered with an accidental. Key signatures are generally written immediately after the clef at the beginning of a line of musical notation, although they can appear in other parts of a score, notably after a double bar.
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Noun
1. the sharps or flats that follow the clef and indicate the key
(synonym) signature
(hypernym) musical notation

Synonyms and related words:
accent, accent mark, bar, cancel, character, custos, direct, dominant, dot, expression mark, fermata, hold, key, keynote, lead, ligature, major, major key, mark, measure, mediant, metronomic mark, minor, notation, pause, pedal point, presa, segno, sign, signature, slur, subdominant, submediant, subtonic, supertonic, swell, symbol, tempo mark, tie, time signature, tonality, tonic, tonic key, vinculum
  

Eng: key signature
Urdu: (موسیقی) عِلامَتِ کَلید ۔ بھاری سُر جِس سے دھُن کا اِشارَہ مِلتا ہے ۔