What is the meaning of Oncome?

To arrive; come to; come on.

Advent, arrival, approach; onset.

The commencement or initial stages of a business, especially of one which requires great exertion.

The setting about of an action; development; progress.

An attack; an attack or onset of a disease, fit, or episode.

A mysterious disease or ailment.

A heavy fall of rain or snow; cloudburst.

The lower edge of a fire-clay lining piece.

advent, arrival (of)

Source: wiktionary.org