Wordnet 3.0
ADJECTIVE (2)
1. 
 characteristic of or relating to the physical properties of solid materials especially electromagnetic or thermodynamic or structural properties of crystalline solids; 
2. 
 consisting of semiconductor materials and components and related devices; 
WordNet (r) 3.0 (2006):
solid-state
    adj 1: characteristic of or relating to the physical properties
           of solid materials especially electromagnetic or
           thermodynamic or structural properties of crystalline
           solids
    2: consisting of semiconductor materials and components and
       related devices