definition of
extension

[1] #1 extension n. a mutually agreed delay in the date set for the completion of a job or payment of a debt; "they applied for an extension of the loan". wn

[2] #2 extension n. act of expanding in scope; making more widely available; "extension of the program to all in need". wn

[3] #3 extension n. [propagation] the spreading of something (a belief or practice) into new regions. wn

[4] #4 extension n. [extension service, university extension] an educational opportunity provided by colleges and universities to people who are not enrolled as regular students. wn

[5] #5 extension n. act of stretching or straightening out a flexed limb. wn