Wordnet 3.0
NOUN (2)
1.
a constitutional system of government (usually with a written constitution);
2.
advocacy of a system of government according to constitutional principles;
The Collaborative International Dictionary of English v.0.48:
Constitutionalism \Con`sti*tu"tion*al*ism\
(k[o^]n`st[i^]*t[=u]"sh[u^]n*al*[i^]z'm), n.
The theory, principles, or authority of constitutional
government; attachment or adherence to a constitution or
constitutional government. --Carlyle.
[1913 Webster]
WordNet (r) 3.0 (2006):
constitutionalism
n 1: a constitutional system of government (usually with a
written constitution)
2: advocacy of a system of government according to
constitutional principles