I think this word means: To create or invent.

Actual definition: \ROO-muh-nayt, intransitive verb:
1. To chew the cud; to chew again what has been slightly chewed and swallowed.”Cattle free to ruminate.” —Wordsworth.
2. To think again and again; to muse; to meditate; to ponder; to reflect.

transitive verb:
1. To chew over again.
2. To meditate or ponder over; to muse on.

Remark: I guess “Ruminate” sounds kind of ponderous… and what is the act of creating without ponder?