Pronunciation: (in"kyoo-nab'yu-lu, ing"-), [key]
—sing. -lumPronunciation: (-lum). [key]
1. extant copies of books produced in the earliest stages (before 1501) of printing from movable type.
2. the earliest stages or first traces of anything.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.