| slovo | definícia |
Hessian crucible
(gcide) | Crucible \Cru"ci*ble\ (kr[udd]"s[i^]*b'l), n. [LL. crucibulum a
hanging lamp, an earthen pot for melting metals (cf. OF.
croisel, creuseul, sort of lamp, crucible, F. creuset
crucible), prob. of German origin; cf. OHG. kr[=u]sul, LG.
kr["u]sel, hanging lamp, kroos, kruus, mug, jug, jar, D.
kroes cup, crucible, Dan. kruus, Sw. krus, E. cruse. It was
confused with derivatives of L. crux cross (cf. Crosslet),
and crucibles were said to have been marked with a cross, to
prevent the devil from marring the chemical operation. See
Cruse, and cf. Cresset.]
1. A vessel or melting pot, composed of some very refractory
substance, as clay, graphite, platinum, and used for
melting and calcining substances which require a strong
degree of heat, as metals, ores, etc.
[1913 Webster]
2. A hollow place at the bottom of a furnace, to receive the
melted metal.
[1913 Webster]
3. A test of the most decisive kind; a severe trial; as, the
crucible of affliction.
[1913 Webster]
Hessian crucible (Chem.), a cheap, brittle, and fragile,
but very refractory crucible, composed of the finest fire
clay and sand, and commonly used for a single heating; --
named from the place of manufacture.
[1913 Webster] |
Hessian crucible
(gcide) | Hessian \Hes"sian\, a.
Of or relating to Hesse, in Germany, or to the Hessians.
[1913 Webster]
Hessian boots, or Hessians, boot of a kind worn in
England, in the early part of the nineteenth century,
tasseled in front. --Thackeray.
Hessian cloth, or Hessians, a coarse hempen cloth for
sacking.
Hessian crucible. See under Crucible.
Hessian fly (Zool.), a small dipterous fly or midge
(Cecidomyia destructor). Its larv[ae] live between the
base of the lower leaves and the stalk of wheat, and are
very destructive to young wheat; -- so called from the
erroneous idea that it was brought into America by the
Hessian troops, during the Revolution.
[1913 Webster] |
| |