Decrease and Reversal

noun

• A change downward.
  • usage: "there was a decrease in his temperature as the fever subsided"; "there was a sharp drop-off in sales"
  • synonyms: lessening, drop-off
• A process of becoming smaller or shorter.
  • synonyms: decrement
• The amount by which something decreases.
  • synonyms: decrement
• The act of decreasing or reducing something.
  • synonyms: diminution, reduction, step-down

verb

• Decrease in size, extent, or range.
  • usage: "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper"
  • synonyms: diminish, lessen, fall
• Make smaller.
  • usage: "He decreased his staff"
  • synonyms: lessen, minify

• (v.t.) To cause to grow less; to diminish gradually; as, extravagance decreases one's means.
• (v.) A becoming less; gradual diminution; decay; as, a decrease of revenue or of strength.
• (n.) To grow less, -- opposed to increase; to be diminished gradually, in size, degree, number, duration, etc. or in strength, quality or excellence; as, they days decrease in length from June to December.
• (v.) The wane of the moon.

noun

• A change from one state to the opposite state.
  • usage: "there was a reversal of autonomic function"
• An unfortunate happening that hinders or impedes; something that is thwarting or frustrating.
  • synonyms: reverse, setback, blow, black eye
• Turning in an opposite direction or position.
  • usage: "the reversal of the image in the lens"
  • synonyms: turn around
• A decision to reverse an earlier decision.
  • synonyms: change of mind, flip-flop, turnabout, turnaround
• A judgment by a higher court that the judgment of a lower court was incorrect and should be set aside.
• Turning in the opposite direction.
  • synonyms: reversion, reverse, turnabout, turnaround
• The act of reversing the order or place of.
  • synonyms: transposition
• A major change in attitude or principle or point of view.
  • usage: "an about-face on foreign policy"
  • synonyms: about-face, volte-face, policy change

• (n.) A change or overthrowing; as, the reversal of a judgment, which amounts to an official declaration that it is false; the reversal of an attainder or of an outlawry, by which the sentence is rendered void.
• (n.) The act of reversing; the causing to move or face in an opposite direction or to stand or lie in an inverted position; as, the reversal of a rotating wheel; the reversal of objects by a convex lens.
• (a.) Intended to reverse; implying reversal.

Turn, unwind. For convertible' Reversal', selling a convertible and buying the underlying common, usually effected by an arbitrageur. For market reversal, change in direction in the stock or commodity futures markets, as charted by technical analysts in trading ranges. For options reversal, closing the positions of each aspect of an options spread or combination strategy.