Webster's Revised Unabridged Dictionary · 1913

Dissident

Dissident , adjective

[Latin dissidens, -entis, present participle of dissidere to sit apart, to disagree; dis- + sedere to sit: compare French dissident. See Sit.]

No agreeing; dissenting; discordant; different.
Our life and manners be dissident from theirs. — Robynson (More's Utopia)

Dissident , noun

(Ecclesiastical) One who disagrees or dissents; one who separates from the established religion.
The dissident, habituated and taught to think of his dissidenc{not transcribed} as a laudable and necessary opposition to ecclesiastical usurpation. — I. Taylor