The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Appendix I
Indo-European Roots
ENTRY:
al-3
DEFINITION:
All. Germanic and Celtic root. 1. Suffixed form *al-na-.a.all; albeit, already, also, although, always, as, from Old English all,eall,eal-,al-, all; b.Althing, from Old Norse allr, all. Both a and b from Germanic *allaz.2. Germanic *ala-, all, in compound *Ala-manniz (see man-1). (In Pokorny 1. al- 24.)