/toh tal'i tair"ee euhn/ , adj.
1. of or pertaining to a centralized government that does not tolerate parties of differing opinion and that exercises dictatorial control over many aspects of life.
2. exercising control over the freedom, will, or thought of others; authoritarian; autocratic.
n.
3. an adherent of totalitarianism.
[ 1925-30; TOTALIT(Y) + -ARIAN ]