Wordnet 3.0
ADJECTIVE (1)
1. 
 not divided or divisible into parts; 
- Example: "layers that were fused into an indiscrete mass"
The Collaborative International Dictionary of English v.0.48:
Indiscrete \In`dis*crete"\, a. [L. indiscretus unseparated. See
   Indiscreet.]
   [1913 Webster]
   1. Indiscreet. [Obs.] --Boyle.
      [1913 Webster]
   2. Not discrete or separated; compact; homogenous.
      [1913 Webster]
            An indiscrete mass of confused matter. --Pownall.
      [1913 Webster]
WordNet (r) 3.0 (2006):
indiscrete
    adj 1: not divided or divisible into parts; "layers that were
           fused into an indiscrete mass"