up vote 2 down vote. The 'exhaust' meaning of the word enervate is a figurative sense that came in later. The original, now archaic/DSL meaning of enervation is to 'cut the nerve (of)', early 15C. The figurative sense is from the 1550s. enervate: (medicine) To partially or completely remove a nerve.
Lesson Summary. A computer system unit is the enclosure that contains the main components of a computer, typically made of steel or aluminum. It holds all other components together and protects the sensitive electronic parts from the outside elements.
system - a group of independent but interrelated elements comprising a unified whole; a vast system of production and distribution and consumption keep the country going scheme. group, grouping - any number of entities (members) considered as a unit. language system - a system of linguistic units or elements used in a particular language