What is the meaning of -tta?

Suffix for the abessive case: without

A suffix for the partitive singular.

Forms certain adverbs, typically of manner.

Forms some nouns, generally for places.

Forms the third-person singular past tense of verbs (definite conjugation).

Forms the verbal participle of certain verbs, always following the agent noun.

This suffix forms a class of neuter abstract nouns from adjectives and nouns, and express the state, nature or quality of being that which is denoted by the adjective or noun.

Forms causative verbs from verbs.

Forms verbs from foreign verb stems.

Forms verbs from adjectives or nouns with a meaning like "to make ...".

Source: wiktionary.org