superstratum

• POS: Noun
• HYPHEN: su=per=stra=tum

CIDE DICTIONARY

superstratum, n. [NL.: cf. L. supersternere, superstratum, to spread upon. See Super-, and Stratum.].

 A stratum, or layer, above another.  [1913 Webster]

OXFORD DICTIONARY

superstratum, n. (pl. -strata) an overlying stratum.

ROGET THESAURUS

superstratum

Exteriority

N exteriority, outside, exterior, surface, superficies, skin, superstratum, disk, disc, face, facet, extrados, excentricity, eccentricity, circumjacence, exterior, external, outer most, outward, outlying, outside, outdoor, round about, extramural, extralimitary, extramundane, superficial, skin-deep, frontal, discoid, extraregarding, excentric, eccentric, outstanding, extrinsic, ecdemic, exomorphic, externally, out, with out, over, outwards, ab extra, out of doors, extra muros, in the open air, sub Jove, sub dio, a la belle etoile, al fresco.