C14: (in the sense: to make right, adorn) and c15 (in the modern sense: to direct words): via Old French from Vulgar Latin addrictiāre (unattested) to make straight, direct oneself towards, from Latin ad- to + dīrectusdirect
late 14c., "to make straight," from O.Fr. adresser (13c.), from V.L. *addirectiare "make straight," from L. ad "to" + *directiare, from L. directus "straight, direct" (see direct). Meaning "to direct spoken words (to someone)" is from late 15c.; noun sense of "formal speech" is from 1751. Meaning in English expanded 17c.-18c. to the notion of directing something, as a letter, "straight" to where somebody lives. "To send as a written message" is from 1630s, which led to noun senses of "superscription of a letter" (1712) and "place of residence" (1888). Related: Addressee (1810).
1. e-mail address. 2. IP address. 3. MAC address. 4. An unsigned integer used to select one fundamental element of storage, usually known as a word from a computer's main memory or other storage device. The CPU outputs addresses on its address bus which may be connected to an address decoder, cache controller, memory management unit, and other devices. While from a hardware point of view an address is indeed an integer most strongly typed programming languages disallow mixing integers and addresses, and indeed addresses of different data types. This is a fine example for syntactic salt: the compiler could work without it but makes writing bad programs more difficult. (1997-07-01)