noun one who holds to a belief in the progression of society toward perfection.
2. progressionist ·noun one who maintains the doctrine of progression in organic forms;
opposed to uniformitarian.
noun one who holds to a belief in the progression of society toward perfection.
2. progressionist ·noun one who maintains the doctrine of progression in organic forms;
opposed to uniformitarian.
Webster English vocab. Английский словарь Webster. 2012