Wordnet 3.0
NOUN (1)
1. 
 a clinical trial on more persons than in phase I; 
 intended to evaluate the efficacy of a treatment for the condition it is intended to treat; 
 possible side effects are monitored; 
[syn: phase II clinical trial, phase II]
WordNet (r) 3.0 (2006):
phase II clinical trial
    n 1: a clinical trial on more persons than in phase I; intended
         to evaluate the efficacy of a treatment for the condition
         it is intended to treat; possible side effects are
         monitored [syn: phase II clinical trial, phase II]