1. 
   Protractile
   capable of extending forward
   Found op http://australianmuseum.net.au/Glossary-of-fish-terms
   
   
2. 
   Protractile
   capable of being protruded or thrust out.
   Found op http://www.coralrealm.com/viewpage.html?page=/glossary.html
   
   
3. 
   protractile
   [adj] - able to be extended
   Found op http://www.webdictionary.co.uk/definition.php?query=protractile
   
   
4. 
   Protractile
   Pro·tract'ile adjective Capable of being protracted, or protruded; protrusile.
   Found op http://www.encyclo.co.uk/webster/P/182
   
   
5. 
   protractile
   protractible adjective able to be extended; `protractile muscle`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=protractile
   
   
6. 
   Protractile
   • (a.) Capable of being protracted, or protruded; protrusile.
   Found op http://thinkexist.com/dictionary/meaning/protractile/
   
   
7. 
   protractile
   1) Capable of extending forward 2) Extensible 3) Extensile 4) Protractible
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/protractile/1
   
   

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