What is the meaning of -in-?

Added to mostly noun roots but also verb roots.

1. in the manner of

   in the manner of

   Forms language names.

   Added to verb roots conjugated with -on or i-, forming nouns.

   1. something done by the action of the root

      something done by the action of the root

      something put somewhere or in something

      Root form of -ino

      a product or result of something

      implies a perpetuation of action; continuous

      product of

      continuous

      passive voice marker

      forms the complete aspect in all triggers except the active trigger

      : forms the progressive aspect in all triggers except in the active trigger

      Source: wiktionary.org