Al-

1. A prefix. The Arabic definite article answering to the English the; as, Alkoran, the Koran or the Book; alchemy, the chemistry.
2. A prefix. All; wholly; completely; as, almighty, almost.
3. A prefix. To; at; on; — in OF. shortened to a-. See Ad-.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.