What is the meaning of -tus?

Alternative form of -us (forms nouns from verbs, describing an action or event)

Romanization of -๐„๐Œฟ๐ƒ

Forms the past participle of verbs.

Forms adjectives having the sense "provided with".

โ€Žerrล (errฤ-) (โ€œwanderโ€) + โ€Ž-tus โ†’ โ€Žerrฤtus , โ€Žaudiล (audฤซ-) (โ€œhearโ€) + โ€Ž-tus โ†’ โ€Žaudฤซtus

โ€Žmoneล (monฤ“-) (โ€œadvise,remindโ€) + โ€Ž-tus โ†’ โ€Žmonitus

โ€Žaugeล (augฤ“-) (โ€œincreaseโ€) + โ€Ž-tus โ†’ โ€Žauctus

Forms action nouns from verbs.

Forms collective/abstract nouns from adjectives or other nouns.

-ly; used to form adverbs.

Source: wiktionary.org