"extention" is probably misspelled. Trying extension instead Definition of extension
extension has definitions from the fields of education,telecommunications,finance,fine art,dance,computer science
1
[ noun ] (finance) a mutually agreed delay in the date set for the completion of a job or payment of a debt

Examples

"they applied for an extension of the loan"

2
[ noun ] act of expanding in scope; making more widely available

Examples

: "extension of the program to all in need"

3
[ noun ] the spreading of something (a belief or practice) into new regions

Synonyms

propagation

4
[ noun ] (education) an educational opportunity provided by colleges and universities to people who not enrolled as regular students
5
[ noun ] act of stretching or straightening out a flexed limb
6
[ noun ] the most direct or specific meaning of a word or expression; the class of objects that an expression refers to

Examples

"the extension of `satellite of Mars' is the set containing only Demos and Phobos"

7
[ noun ] (fine art,dance) the ability to raise the working leg high in the air

Examples

"the dancer was praised for her uncanny extension" "good extension comes from a combination of training and native ability"

8
[ noun ] an addition to the length of something

Synonyms

elongation

9
[ noun ] (computer science) a string of characters beginning with a period and followed by one to three letters; the optional second part of a PC computer filename

Examples

"most applications provide extensions for the files they create" "most BASIC files use the filename extension .BAS"

10
[ noun ] amount or degree or range to which something extends

Examples

: "the wire has an extension of 50 feet"

11
[ noun ] (telecommunications) an additional telephone set that is connected to the same telephone line
12
[ noun ] an addition that extends a main building

Synonyms

annexe wing annex

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