Lewis & Short

prŏfundĭtas, ātis, f. [profundus], depth (post-class.).

  1. I. Lit.: corporum tres sunt dimensiones, longitudo, latitudo, profunditas, Macr. Somn. Scip. 1, 6, 36: aquarum, Cassiod. Var. 2, 21.
  2. II. Trop., vastness, immensity, Hadrian. ap. Vop. Sat. 8: disciplinae, Macr. Somn. Scip. 1, 7, 3: prudentiae, id. ib. 1, 3, 12: ingenii, id. ib. 2, 2, 1.
      1. 2. Depth, intensity, darkness: tenebrarum, Macr. S. 1, 20, 1.