SMOKE n. 3 definitions
The visible exhalation, vapor, or substance that escapes, or expelled, from a burning body, especially from burning vegetable matter, as wood, coal, peat, or the like.
SOLAR a.
lar engine, an engine in which the energy of solar heat is used to produce motion, as in evaporating water for a steam engine, or expanding air for an air engine. -- Solar flowers (Bot.), flowers which open and shut daily at certain hours. -- Solar lamp, an argand lamp. -- Solar microscope, a microscope consisting e…
SPECTRUM n.
iffraction, as by a grating. -- Gaseous spectrum, the spectrum of an incandesoent gas or vapor, under moderate, or especially under very low, pressure. It is characterized by bright bands or lines. -- Normal spectrum, a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spe…
SPRUCE n.
a. -- Essence of spruce, a thick, dark-colored, bitterish, and acidulous liquid made by evaporating a decoction of the young branches of spruce. -- Hemlock spruce (Bot.), a graceful coniferous tree (Tsuga Canadensis) of North America. Its timber is valuable, and the bark is largely used in tanning leather. -- Spruce…