a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename
a mutually agreed delay in the date set for the completion of a job or payment of a debt
act of expanding in scope; making more widely available
the spreading of something (a belief or practice) into new regions
an educational opportunity provided by colleges and universities to people who are not enrolled as regular students
act of stretching or straightening out a flexed limb
amount or degree or range to which something extends
an addition to the length of something
the ability to raise the working leg high in the air
(computer science) the name given to a computer file in order to distinguish it from other files; may contain an extension that indicates the type of file
