Columbia Encyclopedia

Search results

500 results found

blink microscope

(Encyclopedia)blink microscope, in astronomy, device for determining a change in position or magnitude (brightness) of a star relative to other stars in the background. Two photographs of the same field or area of ...

lien

(Encyclopedia)lien, claim or charge held by one party, on property owned by a second party, as security for payment of some debt, obligation, or duty owed by that second party. A lien may arise by agreement between...

mayhem

(Encyclopedia)mayhem māˈhĕm, māˈəm [key], in common law, the crime of willfully injuring a person so as to diminish his or her capacity for self-defense. Cutting off an arm or leg would thus be mayhem, while ...

identity theft

(Encyclopedia)identity theft, the use of one person's personal information by another to commit fraud or other crimes. The most common forms of identity theft occur when someone obtains another person's social secu...

toothwort

(Encyclopedia)toothwort, any species of the genus Dentaria [Lat. dens=tooth, for the toothed rhizomes of some species], slender perennials of the family Cruciferae (or Brassicaceae; mustard family), native to north...

croup

(Encyclopedia)croup kro͞op [key], acute obstructive laryngitis in young children, usually between the ages of three and six. The manifestations are a high-pitched cough and difficulty in breathing, owing to a spas...

truss

(Encyclopedia)CE5 A. King post truss B. Queen, with princess posts truss, in architecture and engineering, a supporting structure or framework composed of beams, girders, or rods commonly of steel or wood lying...

proof, in mathematics

(Encyclopedia)proof, in mathematics, finite sequence of propositions each of which is either an axiom or follows from preceding propositions by one of the rules of logical inference (see symbolic logic). Mathematic...

radish

(Encyclopedia)radish, herbaceous plant (Raphanus sativus) belonging to the family Cruciferae (or Brassicaceae; mustard family), with an edible, pungent root sliced in salads or used as a relish. It is thought to be...

intaglio

(Encyclopedia)intaglio ĭntălˈyō, –tälˈ– [key], design cut into stone or other material or etched or engraved in a metal plate, producing a concave, instead of a convex, effect. It is the reverse of a reli...