Defn: Permanent; durable. [Obs.] Lydgate.

PERMANENCE; PERMANENCY
Per"ma*nence, Per"ma*nen*cy, n. Etym: [Cf. F. permanence.]

Defn: The quality or state of being permanent; continuance in the same state or place; duration; fixedness; as, the permanence of institutions; the permanence of nature.

PERMANENT Per"ma*nent, a. Etym: [L. permanens, -entis, p.pr. of permanere to stay or remain to the end, to last; per + manere to remain: cf. F. permanent. See Per-, and Mansion.]

Defn: Continuing in the same state, or without any change that destroys form or character; remaining unaltered or unremoved; abiding; durable; fixed; stable; lasting; as, a permanent impression. Eternity stands permanent and fixed. Dryden. Permanent gases (Chem. & Physics), hydrogen, oxygen, nitrogen, and carbon monoxide; — also called incondensible or incoercible gases, before their liquefaction in 1877. — Permanent way, the roadbed and superstructure of a finished railway; — so called in distinction from the contractor's temporary way. — Permanent white (Chem.), barium sulphate (heavy spar), used as a white pigment or paint, in distinction from white lead, which tarnishes and darkens from the formation of the sulphide.

Syn.
— Lasting; durable; constant. See Lasting.

PERMANENTLY
Per"ma*nent*ly, adv.

Defn: In a permanent manner.

PERMANGANATE
Per*man"ga*nate, n. (Chem.)

Defn: A salt of permanganic acid. Potassium permanganate. (Chem.) See
Potassium permanganate, under Potassium.