(~s)
1.
An ~ in something or in the value of something is an amount by which it increases. (FORMAL)
The average yearly ~ in labour productivity in industry was 4.5 per cent...
N-COUNT: oft N in/of n
2.
An ~ is an amount by which your salary automatically increases after a fixed period of time. (FORMAL)
Many teachers qualify for an annual ~.
N-COUNT