Word Meanings - CONCHOID - Book Publishers vocabulary database

A curve, of the fourth degree, first made use of by the Greek geometer, Nicomedes, who invented it for the purpose of trisecting an angle and duplicating the cube.

• Trisection
  The division of a thing into three parts, Specifically: (Geom.) the division of an angle into three equal parts.
• Geometer
  One skilled in geometry; a geometrician; a mathematician.
• Inventorial
  Of or pertaining to an inventory.
• ANGLEOFENTRY
  The angle between the tangent to the advancing edge (of an aërocurve) and the line of motion; -- contrasted with angle of trail, which is the angle between the tangent to the following edge and the line of motion.
• Duplicate
  Double; twofold.
• Inventories
  of Inventory
• ANGLEOFINCIDENCE
  The angle between the chord of an aërocurve and the relative direction of the undisturbed air current.
• Duplicated
  of Duplicate
• Greekess
  A female Greek.
• Inventory
  An account, catalogue, or schedule, made by an executor or administrator, of all the goods and chattels, and sometimes of the real estate, of a deceased person; a list of the property of which a person or estate is found to be possessed; hence, an
• FIRSTCLASS
  Of the best class; of the highest rank; in the first division; of the best quality; first-rate; as, a first-class telescope. First- class car or First-class railway carriage, any passenger car of the highest regular class, and intended for passengers wh
• Duplicating
  of Duplicate
• Greekish
  Peculiar to Greece.
• Inventoried
  of Inventory
• FIRSTHAND
  Obtained directly from the first or original source; hence, without the intervention of an agent. One sphere there is . . . where the apprehension of him is first-hand and direct; and that is the sphere of our own mind. J. Martineau.
• Anglemeter
  An instrument to measure angles, esp. one used by geologists to measure the dip of strata.

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