slag wool
21Mineral wool — Wool Wool (w[oo^]l), n. [OE. wolle, wulle, AS. wull; akin to D. wol, OHG. wolla, G. wolle, Icel. & Sw. ull, Dan. uld, Goth, wulla, Lith. vilna, Russ. volna, L. vellus, Skr. [=u]r[.n][=a] wool, v[.r] to cover. [root]146, 287. Cf. {Flannel},… …
22Philosopher's wool — Wool Wool (w[oo^]l), n. [OE. wolle, wulle, AS. wull; akin to D. wol, OHG. wolla, G. wolle, Icel. & Sw. ull, Dan. uld, Goth, wulla, Lith. vilna, Russ. volna, L. vellus, Skr. [=u]r[.n][=a] wool, v[.r] to cover. [root]146, 287. Cf. {Flannel},… …
23Pulled wool — Wool Wool (w[oo^]l), n. [OE. wolle, wulle, AS. wull; akin to D. wol, OHG. wolla, G. wolle, Icel. & Sw. ull, Dan. uld, Goth, wulla, Lith. vilna, Russ. volna, L. vellus, Skr. [=u]r[.n][=a] wool, v[.r] to cover. [root]146, 287. Cf. {Flannel},… …
24Mineral wool — close up. Mineral wool under micr …
25rock wool — noun a light fibrous material used as an insulator • Syn: ↑mineral wool • Hypernyms: ↑insulator, ↑dielectric, ↑nonconductor * * * noun : mineral wool made by blowing a jet of steam through molten rock (as limestone or siliceous rock) or through… …
26Mineral wool — Mineral Min er*al, a. 1. Of or pertaining to minerals; consisting of a mineral or of minerals; as, a mineral substance. [1913 Webster] 2. Impregnated with minerals; as, mineral waters. [1913 Webster] {Mineral acids} (Chem.), inorganic acids, as… …
27rock wool — n. a fibrous material that looks like spun glass, made from molten rock or slag by passing a blast of steam through the fluid; mineral wool: it is used for insulation, esp. in buildings * * * …
28rock-wool — /ˈrɒk wʊl/ (say rok wool) noun an insulating material consisting of wool like fibres made from molten rock or slag by forcing a blast of steam through the liquid …
29rock wool — n. a fibrous material that looks like spun glass, made from molten rock or slag by passing a blast of steam through the fluid; mineral wool: it is used for insulation, esp. in buildings …
30rock wool — noun Date: circa 1909 mineral wool made by blowing a jet of steam through molten rock (as limestone or siliceous rock) or through slag and used chiefly for heat and sound insulation …
