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red lead

(Encyclopedia)red lead, bright red to orange-red powder, also called minium, that is used in the manufacture of storage batteries, lead glass, and red pigments; a paint made with red lead is commonly used to protec...

red maids

(Encyclopedia)red maids: see purslane.

red pepper

(Encyclopedia)red pepper: see pepper.

Red Sea

(Encyclopedia)Red Sea, ancient Sinus Arabicus or Erythraean Sea, narrow sea, c.170,000 sq mi (440,300 sq km), c.1,450 mi (2,330 km) long and up to 225 mi ...

red shift

(Encyclopedia)red shift or redshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the red, or longer wavelength, end of the visible spectrum. The effect...

red snapper

(Encyclopedia)red snapper: see snapper.

red spider

(Encyclopedia)red spider: see mite.

red spruce

(Encyclopedia)red spruce: see spruce.

red squill

(Encyclopedia)red squill: see squill.

red tide

(Encyclopedia)red tide: see Dinoflagellata.