jil·lion 
(jĭlyən)
(jĭlyən)n.
Informal
Informal
An indefinitely large number.
[On the model of MILLION, BILLION, etc.]
jil′lion·aire (jĭl′yə-nâr) n.
jillionth adj. & n.
- pyromancy
- pyromania
- pyromaniac
- pyromaniacal
- pyromantic
- pyrometallurgical
- pyrometallurgy
- pyrometer
- pyrometric
- pyrometrical
- pyrometrically
- pyrometry
- pyromorphite
- pyronin
- pyronine
- pyrope
- pyrophoric
- pyrophosphate
- pyrophosphatic
- pyrophosphoric acid
- pyrophyllite
- pyrosis
- pyrostat
- pyrosulfate
- pyrosulfuric acid