1. A homosexual man.
  2. An inverted arch (as in a sewer). *
  3. The base of a tunnel on which the road or railway may be laid and used when construction is through unstable ground. It may be flat or form a continuous curve with the tunnel arch.
  4. The lowest point inside a pipe at a certain point.
  5. An elevation of a pipe at a certain point along the pipe.


  1. To turn (something) upside down or inside out; to place in a contrary order or direction.
    to invert a cup, the order of words, rules of justice, etc.
  2. To move (the root note of a chord) up or down an octave, resulting in a change in pitch.
  3. To undergo inversion, as sugar.
  4. To divert; to convert to a wrong use.


  1. Subjected to the process of inversion; inverted; converted.
    invert sugar

The above text is a snippet from Wiktionary: invert
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