Webster's Revised Unabridged Dictionary · 1913

Judaism

Judaism , proper noun

[Latin Judaismus: compare French judaisme.]

1.
The religious doctrines and rites of the Jews as enjoined in the laws of Moses, and for many adherents, in the Talmud. — J. S. Mill
2.
Conformity to the Jewish rites and ceremonies; the practise of Judaism{1}.
3.
The adherents of Judaism{1} collectively; jewry.