Useful

PhD

Term

https://en.wikipedia.org/wiki/Term
https://definedterm.com/

FYI

https://www.youtube.com/user/fyi/videos
https://en.wikipedia.org/wiki/FYI
http://www.fyi.tv/

Acronym

https://en.wikipedia.org/wiki/Acronym
http://acronymcreator.net/
http://www.acronymfinder.com/
http://www.acronymattic.com/

K

in

https://www.inshorts.com/

Full

http://fullforms.com/
http://thefullform.in/
http://formfull.in/
http://fullformplus.com/
http://fullyexpanded.com/

ASL

Birth

Be

Laugh

Slang

https://en.wikipedia.org/wiki/Slang

Acronym
http://acronymsandslang.com/

Dictionary
http://onlineslangdictionary.com/

No
http://www.noslang.com/

Internet
http://www.internetslang.com/ 

Tube
https://www.youtube.com/results?search_query=slang

Slides
http://www.slideshare.net/search/slideshow?searchfrom=header&q=slang

ETC

https://en.wikipedia.org/wiki/ETC