Word-addressable is a Computer Architecture

Computer architecture

In computer science and engineering, computer architecture is the practical art of selecting and interconnecting hardware components to create computers that meet functional, performance and cost goals and the formal modelling of those systems....

 term.

In computer architecture, a word is an ordered set of byte

Byte

The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...

s or bits (typically 4 bytes(=32 bits)) that is the normal unit in which information may be stored, transmitted, or operated on within a given computer.

Typically, if a processor has a fixed-length instruction set, then the instruction length equals the word length.