Ho‐san″na (hō̍‐zăn″nȧ), n.; pl.Hosannas (–nȧz). [Gr. �, fr. Heb. hōshī'āh nnāsave now, save, we pray, hōshīa' to save (Hiphil, a causative form, of yāsha') + nā, a particle.] A Hebrew exclamation of praise to the Lord, or an invocation of blessings. “Hosanna to the Highest.” Milton.
Hosanna to the Son of David. Matt. xxi. 9.