"Blend of Lori and Anna"
The name Lorianna is commonly a female name from the "English" origin.
Lorianna is most plausibly a modern English formation combining Lori, the twentieth-century diminutive of Laura, with Anna, a name long established in English. Both elements are visible in the spelling, and the name first appears in United States birth records in 1967, at a time when Lori was in wide use. The same pattern of joining a short name ending in -i to Anna produces forms such as Laurianna and Rosianna.
The pronunciation of Lorianna is lor-ee-AN-uh.