from The American Heritage® Dictionary of the English Language, 4th Edition
- Variant of ad-.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- Alternative form of all-.
- Variant of ad- used before the letter L.
from the GNU version of the Collaborative International Dictionary of English
- All; wholly; completely.
- To; at; on; -- in OF. shortened to a-. See ad-.
- The Arabic definite article answering to the English the
From Middle English al-, from Old English eal-, eall- ("all-"). More at all. (Wiktionary)
From Latin al-, variant of ad- used with words starting with L. (Wiktionary)