'Heavy spar' definitions:
Definition of 'heavy spar'
(from WordNet)
noun
A white or colorless mineral (BaSO4); the main source of barium [syn: heavy spar, barite, barytes, barium sulphate]
Definition of 'Heavy spar'
From: GCIDE
- Heavy spar \Heav"y spar`\ (Min.) Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals. [1913 Webster]
Definition of 'heavy spar'
From: GCIDE
- Barite \Ba"rite\, n. (Min.) Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in compact massive forms resembling marble. It has a high specific gravity, and hence is often called heavy spar. It is a common mineral in metallic veins. [1913 Webster]
Definition of 'heavy spar'
From: GCIDE
Definition of 'heavy spar'
From: GCIDE
- Permanent \Per"ma*nent\, a. [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.] 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. [1913 Webster]
- Eternity stands permanent and fixed. --Dryden. [1913 Webster]
- Permanent gases (Chem. & Physics), hydrogen, oxygen, nitrogen, and carbon monoxide; -- also called incondensible gases or incoercible gases, before their liquefaction in 1877. The term is now archaic.
- 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. [1913 Webster]
- Syn: Lasting; durable; constant. See Lasting. [1913 Webster]