Hosanna \Ho*san"na\ (h[-o]*z[a^]n"n[.a]), n.; pl. {Hosannas} (-n[.a]z). [Gr. ?, fr. Heb. h[=o]sh[=i]'[=a]h nn[=a]save now, save, we pray, h[=o]sh[=i]a' to save (Hiphil, a causative form, of y[=a]sha') + n[=a], 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.