Cacia Is A Girl’s Name Of Greek Origins, Meaning “thorny Tree.” The Name Derives From The Greek Name Acacia And Is Related To The Irish Girl’s Name Casey, Giving Baby Cacia A European Appeal. The Acacia Is A Shrub Belonging To The Mimosa Family That Features White Or Yellow Blossoms And Symbolizes Regeneration And Immortality. The Acacia Also Shares Biblical Ties, As The Ark Of The Covenant Was Made Out Of Its Wood. An Attractive Name That Shares Connections With A Greek Blossom, Cacia Is The Perfect Pick For Your Little Gem.