The Collaborative International Dictionary
Fuliginosity
Fuliginosity \Fu*lig"i*nos"i*ty\, n. [Cf. F. fuliginosit['e].] The condition or quality of being fuliginous; sootiness; matter deposited by smoke. [R.]
Wiktionary
fuliginosity
n. 1 The condition or quality of being fuliginous; sootiness. 2 Matter deposited by smoke.