1. 
   additional
   [Adjective] Something which is added or extra.
   Example: When they booked the holiday, they asked if there were any additional costs.
   Found op http://www.bbc.co.uk/skillswise/glossary/
   
   
2. 
   additional
   [adj] - existing or coming by way of addition
   Found op http://www.webdictionary.co.uk/definition.php?query=additional
   
   
3. 
   Additional
   Ad·di'tion·al adjective Added; supplemental; in the way of an addition.
   Found op http://www.encyclo.co.uk/webster/A/26
   
   
4. 
   Additional
   Ad·di'tion·al noun Something added. [ R.] Bacon.
   Found op http://www.encyclo.co.uk/webster/A/26
   
   
5. 
   additional
   Existing or coming by way of addition, added, further. ... (18 Nov 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?additional
   
   
6. 
   Additional
   • (a.) Added; supplemental; in the way of an addition. • (n.) Something added.
   Found op http://thinkexist.com/dictionary/meaning/additional/
   
   
7. 
   additional
   existing or coming by way of addition; added, further.
   Found op http://users.ugent.be/~rvdstich/eugloss/DIC/dictio02.html
   
   
8. 
   additional
   1) Added 2) Auxiliary 3) Extra 4) Extramural 5) Further 6) More 7) New 8) Optional 9) Other 10) Second 11) Secondary 12) Spare 13) Superfluous 14) Supplementary
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/additional/1
   
   

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