What does APPLICATION mean?

noun

1. the act of bringing something to bear; using it for a particular purpose“he advocated the application of statistics to the problem”
2. a verbal or written request for assistance or employment or admission to a school“December 31 is the deadline for applications”
3. the work of applying something“the doctor prescribed a topical application of iodine”
4. a program that gives a computer instructions that provide the user with tools to accomplish a task“he has tried several different word processing applications”
5. liquid preparation having a soothing or antiseptic or medicinal action when applied to the skin“a lotion for dry skin”
6. a diligent effort“it is a job requiring serious application”
7. the action of putting something into operation“the application of maximum thrust”