(Encyclopedia) notochordnotochordnōˈtəkôrdˌ [key], in biology, supporting rod running most of the length of animals of the phylum Chordata and present at varying times in the life cycle. Composed of…
(Encyclopedia) pencil, pointed implement used in writing or drawing to apply graphite or a similar colored solid to any surface, especially paper. From prehistoric times lumps of colored earth or…
(Encyclopedia) yard, abbr. yd, basic unit of length in the customary system of English units of measurement; all other units in the English system, such as the inch, foot, rod, and mile, are derived…
(Encyclopedia) needle, implement of metal or other material used to carry the thread in sewing and in various forms of needlework and manufacturing. The earliest needles were merely awls or punches.…
(Encyclopedia) Shelby, Carroll Hall, 1923–2012, automobile racer and designer, b. Leesburg, Tex. After serving as a flight instructor in World War II, he began (1952) a career as a race-car driver.…
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(Encyclopedia) prospecting, search for mineral deposits suitable for mining. Modern prospecting has replaced earlier methods based on chance or superstition (e.g., use of the divining rod) with…
(Encyclopedia) electrode, terminal through which electric current passes between metallic and nonmetallic parts of an electric circuit. In most familiar circuits current is carried by metallic…
(Encyclopedia) fishing, act of catching fish for consumption or display. Fishing—usually by hand, club, spear, net, and (at least as early as 23,000 years ago) by hook—was known to prehistoric people…
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