TONITE
Etymology 1
Noun
tonite (uncountable)
(US, informal, entertainment industry) Alternative spelling of tonight
Usage notes
Tonite is often used in advertising in the entertainment industry in the United States, for example on signs outside theaters displaying the evening's performances. Tonight is almost always used in most other contexts such as academia, politics, news media, etc.
Etymology 2
Noun
tonite (uncountable)
An explosive compound; a preparation of guncotton.
Source: Wiktionary
Ton"ite, n. Etym: [Cf.L. tonare to thunder.]
Definition: An explosive compound; a preparation of gun cotton.
Source: Webster’s Unabridged Dictionary 1913 Edition