'processor-heavy' is a compound word formed from 'processor' and 'heavy', where 'processor' refers to the central processing unit of a computer, and 'heavy' implies a significant load or demand.

The term 'processor-heavy' emerged in the late 20th century with the rise of personal computing, combining 'processor' from computing terminology and 'heavy' from general English usage.

Initially, it referred to tasks that required more processing power than average, and this meaning has remained consistent.