What is the meaning of -ivo?

a suffix usually indicating a mass noun derived from a verb, e.g. the stuff needed for or the product of some activity

-ive

used with a stem to form the first-person singular imperfect of regular -ire verbs

dative/ablative masculine/neuter singular of -īvus

-ive (relating to)

-ive (of the nature of)

Suffix appended to words to create a neuter noun, usually denoting a material or an object.

-ive

Source: wiktionary.org