[f. CONGRESSION + -IST. Cf. prec.] A member or supporter of a congress.
1889. Pall Mall G., 24 Jan., 6/2. You speak of agitators. Do you refer to congressionists?
1889. N. Digby, ibid., 27 Feb., 2/3. To favour me with the names of the Congressionists who received Russian gold.
