Casiah as a Baby Name. Meaning and Origin of Casiah

What is the meaning of the name Casiah ?

The baby name Casiah is a Unisex name , 3 syllables long and is pronounced kuh-SIGH-uh or kuh-SAY-uh (phonetic: /kəˈsaɪə/ or /kəˈseɪə/).

Casiah is in Origin.

Casiah blends deep biblical and classical roots into a modern, melodic form. It links to Cassia - the Latin and Greek name for the aromatic cinnamon bark - and to Keziah (Hebrew Qetsiah), one of Job’s daughters, whose name also means “cassia.” The -iah ending echoes the cadence of Isaiah and Josiah, giving the name a gently sacred hue without fixing it to a single tradition. As a result, Casiah carries the evocative meaning “cassia, cinnamon,” often associated with fragrance, warmth, and value.

The spelling itself is recent, appearing in late–20th- and early–21st-century usage, chiefly in English-speaking countries, while its roots are millennia old. Casiah is predominantly feminine but sees occasional unisex use. Related forms and near-variants include Cassia, Casia, Kassia, Cassiah, Kasiah, Keziah, and Kezia; diminutives such as Cass, Cassie, and Sia are common. Its rare profile and cross-cultural resonance make Casiah a distinctive choice that still feels familiar.