Webster's Revised Unabridged Dictionary · 1913

Al

Al ({not transcribed}) , adjective

All. [Obsolete] — Chaucer

Al ({not transcribed}) , noun

(Chemistry) the chemical symbol for aluminum.

Al , conjunction

Although; if. [Obsolete]

al- , prefix

[Anglo-Saxon eal.]

(a)
All; wholly; completely; as, almighty, almost.
(b)
To; at; on; -- in Old French shortened to a-. See ad-.
(c)
The Arabic definite article answering to the English the; as, Alkoran, the Koran or the Book; alchemy, the chemistry.