Webster's Revised Unabridged Dictionary · 1913

Secern

Secern , transitive verb

[Latin secernere. See Secrete.]

1.
To separate; to distinguish.
Averroes secerns a sense of titillation, and a sense of hunger and thirst. — Sir W. Hamilton
2.
(Physiology) To secrete; as, mucus secerned in the nose. — Arbuthnot