Fron the Latin "consecratus" past participle of the verb, "consecrare";
"Con", meaning together or with + "sacrare", meaning to sanctify, or to make holy
Another way of thinking about practicing the concept of "consecration" as a way of life.
"I noticed how focused I was on each act, I sought to make every nail just right, and every cut straight and true. I wasn’t so much focused on trying to make everything perfect per se, Steve Reed
The difference between focusing on trying to do something "right", and focusing on trying to do something in manner that makes it sacred; dedicated to God.
It is no just giving up what you have to God, or just using what God has given you to further His work. It is the process of you humbly seeking to make yourself, and all you have, and all the work you do, become an element of holiness and oneness with Him.
Steve Reed's writing on the subject: "What if Everything Became Sacred"