This is a simple tri-tip rub recipe straight from a barbeque in Santa Maria..
-ation. suffix forming nouns. 1. indicating an action, process, state, condition, or result Compare-ion, -tion: arbitration; cogitation; hibernation; moderation. [from Latin -ÄtiÅn-, suffix of abstract nouns, from -Ätus-ate 1 + -iÅn-ion].
late 14c., petition (to God or a god) for aid or comfort; invocation, prayer; also a summoning of evil spirits, from Old French invocacion (12c.), from Latin invocationem (nominative invocatio), noun of action from past participle stem of invocare to call upon, invoke, appeal to (see invoke).