Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

marmŏro, āvi, ātum, 1, v. a. [marmor],

  1. I. to overlay or incrust with marble (post-Aug.; most freq. in part. perf.): palatio exornato hoc genere marmorandi, Lampr. Alex. Sev. 25: porticus marmorata, Petr. 77, 4: ingenti plaga marmorata dorso, i. e. paved with stones, Stat. S. 4, 3, 96.
  2. II. To make a kind of plaster out of marble (ante-class., and only in part. perf.): tectorium marmoratum, Varr. R. R. 1, 57, 1.
    Hence, mar-mŏrātum, i, n., a covering for walls or floors made of pounded marble and lime, Varr. R. R. 1, 59, 3; 3, 7, 3; Plin. 36, 23, 55, § 176.