Wordnet 3.0
ADJECTIVE (1)
1. 
 allowing light to pass through diffusely; 
- Example: "translucent amber"- Example: "semitransparent curtains at the windows"[syn: translucent, semitransparent]
The Collaborative International Dictionary of English v.0.48:
Semitransparent \Sem`i*trans*par"ent\, a.
   Half or imperfectly transparent.
   [1913 Webster]
WordNet (r) 3.0 (2006):
semitransparent
    adj 1: allowing light to pass through diffusely; "translucent
           amber"; "semitransparent curtains at the windows" [syn:
           translucent, semitransparent]