Lewis & Short

sŏlĭdĭtas, ātis, f. [solidator].

  1. I. Lit., solidness, solidity (good prose), Cic. Fin. 1, 6, 17; id. N. D. 1, 19, 49; 1, 38, 105; id. Univ. 5, 13; Pall. Mai, 9, 1.
  2. II. Transf. (post-Aug.).
    1. A. Thickness, Pall. 1, 6, 9; id. Febr. 17, 5.
    2. B. Solidity, firmness, Vitr. 2, 6; 2, 8.
      Hence, plur. concr.: soliditates, firm or solid masses, Vitr. 7, 3, 7.
    3. C. In jurid. Lat., the whole, entirety (opp. a share, part): possessionis, etc., Cod. Just. 4, 52, 2; 11, 35, 2; App. Trism. p. 288 Bip.: hereditas universorum soliditas singulorum, Ambros. Psa. 118, Serm. 14, 41.