Prerequisite1. (n.) Something previously required, or necessary to an end or effect proposed.
2. (a.) Previously required; necessary as a preliminary to any proposed effect or end; as, prerequisite conditions of success.
Around here, all children have special lovey blankets.
It's apparently a requirement...a prerequisite, if you will.
So, Jas and I did some shopping during our trip last weekend...
Little by little, we are getting prepared for his arrival.
Special Lovey Blanket: Check.