There are two ways for transferring thesaurus between environments.
1) Export the site data from one environment and import it to other.
2) Using IFCR command. From your /<yourendecapath>/<application> /control directory, execute:
runcommand.bat IFCR exportNode ..\config\temp\thesaurus thesaurus
All thesaurus entry files will be created in the specified directory. If the directory does not exist in your filesystem, the EAC creates it for you.
Once you have the exported version, you can easily import it using
runcommand.bat IFCR importNode ..\config\temp\thesaurus thesaurus