py·rog·ra·phy 
(pī-rŏgrə-fē)
(pī-rŏgrə-fē)n. pl. py·rog·ra·phies
1. The process or art of producing designs on wood, leather, or other materials by using heated tools or a fine flame.
2. A design made by this process.
pyro·graph′ (pīrə-grăf′) n.
py·rogra·pher n.
py′ro·graphic adj.