A variant of Katrina or Catriona, from Katherine, usually meaning 'pure.'
Catreena is a variant of Katrina or Catriona, both ultimately tied to Katherine and the Greek idea of purity. This places the name inside a long classical family, even though its spelling gives it a more decorative and extended appearance.
The extra vowels make Catreena feel soft, elegant, and slightly romantic. It has the comfort of a known name but the flair of a less common one, which helps it sound both traditional and individualized. In modern usage, it suggests grace and familiarity without sacrificing distinctiveness.