In addition, it means that if something else also, is obtained.
by anadidurs it is incorrectly written and it should be written as "By adding" being its meaning: Complete, patch, patching, fill a gap
by anadidurs it is incorrectly written and it should be written as "Addition" being its meaning: Anadidus, is not spelled correctly. The right thing is addition. It means Additionally, moreover, inclusive. Increase, add, add, add.