Lewis & Short

spătĭōsus, a, um, adj. [spatium], roomy, of great extent, ample, spacious; poet., large, long, broad, etc. (mostly poet. and in postAug. prose; not in Cic.; syn.: latus, amplus, laxus).

  1. I. Lit.: stabulum, Col. 6, 2, 2: insula, Plin. 4, 12, 26, § 82: loca, Quint. 11, 2, 18: aequor, Plin. 4, 1, 1, § 4: amnis, id. 4, 20, 34, § 112: colles, Luc. 6, 106: volumina fumi, id. 3, 505: taurus (opp. parva vipera), Ov. R. Am. 421: corpus, id. M. 3, 56: ossa pectoris (with ingentes umeri), Val. Fl. 4, 244: mergus in guttura, Ov M. 11, 754: limes, id. ib. 15, 849: ulmus, id. ib. 14, 661: frons cornibus, id. ib. 3, 20 (Merkel, speciosa): voces, i. e. of many syllables (corresp. to amplitudo dactyli), Quint. 9, 4, 136 et saep.
    Comp.: spatiosiora quam decem pedum, Col. 5, 5, 3 (opp. contractiora): Andromache spatiosior aequo, Ov. A. A. 2, 645; id. Am. 1, 14, 3: quo non spatiosior alter innumeras cepisse rates, Sil. 8, 481 al.
    Sup.: spatiosissima sedes hominum deorumque, Plin. Pan. 63 fin.
  2. II. Trop.
    1. A. Of time, long, long-continuing, prolonged: nox, Ov. H. 1, 9: tempus, id. Am. 1, 8, 81: aevum, id. M. 8, 529: senectus, id. ib. 12, 186: vetustas, id. ib. 15, 623: bellum, id. ib. 13, 206.
    2. B. Of other things, great, comprehensive: magna et spatiosa res est sapientia: vacuo illi loco opus est, Sen. Ep. 88, 33.
      Adv.: spătĭōsē.
      1. 1. Widely, greatly, extensively, Plin. 19, 5, 29, § 92; 31, 11, 47, § 129.
        Comp., Plin. Ep. 3, 18, 1; Ov. Am. 3, 6, 85.
      2. 2. Long; comp., at a later time, Prop. 3, 20, 11 (4, 20, 3).