Definition:Word (Natural Language)
A word in natural language is intuitively understood as a sequence of sounds which expresses a concept.
When written down, it appears as a sequence of letters, each one of which either is, or contributes to, a phoneme.
Also known as
A word in this context is sometimes referred to as a phonogram, indicating that it is a representation of a sequence of sounds.
Compare this to ideogram, which is a symbol which stands for a concept directly.