We found 2 dictionaries that define the word hours-long:

General (2 matching dictionaries)

1. hours-long: Wordnik
2. hours-long: Wiktionary

Definitions from Wiktionary (hours-long) ▸ adjective:  Lasting multiple hours ▸ Words similar to hours-long ▸ Usage examples for hours-long ▸ Idioms related to hours-long ▸ Wikipedia articles (New!) ▸ Popular nouns described by hours-long ▸ Words that often appear near hours-long ▸ Rhymes of hours-long ▸ Invented words related to hours-long