Definition of polygrammatic in English:

polygrammatic

Pronunciation /ˌpɒlɪɡrəˈmatɪk/

adjective

historical
  • Designating a form of semaphore in which several pairs of pivoted movable arms are employed, arranged on several upright posts or on a single post.

    This system of semaphore was devised by General Sir Charles Pasley (1780–1861), British army officer.

Origin

Early 19th century. From polygram + -atic.