inversion inversion  /ɪn ˈvɜr ʒən/


  1. (n) a term formerly used to mean taking on the gender role of the opposite sex
  2. (n) turning upside down; setting on end
  3. (n) the act of turning inside out
  4. (n) the layer of air near the earth is cooler than an overlying layer
  5. (n) abnormal condition in which an organ is turned inward or inside out (as when the upper part of the uterus is pulled into the cervical canal after childbirth)
  6. (n) a chemical process in which the direction of optical rotation of a substance is reversed from dextrorotatory to levorotary or vice versa
  7. (n) (genetics) a kind of mutation in which the order of the genes in a section of a chromosome is reversed
  8. (n) the reversal of the normal order of words
  9. (n) (counterpoint) a variation of a melody or part in which ascending intervals are replaced by descending intervals and vice versa


  1. But this fog was pinned down by a temperature inversion, and was steadily thickened by the soot and smoke of the coal-burning city.
  2. Koontz packs her sessions with inversion positions, arguing that keeping the head lower than the heart increases youth-giving blood flow to the face.
  3. An inversion layer of warm air domed over the region the day before Thanksgiving, trapping the dirty air beneath it.


  1. After sky-high pollution levels, prevention group forms

    The sky is clear and the inversion is long gone, but air pollution is still a big problem for Northern Utah.
    on June 12, 2013     Source: KSL Salt Lake City

  2. Acceleware Showcases Seismic Depth Imaging Advancements at EAGE London 2013

    LONDON, UNITED KINGDOM--(Marketwired - June 10, 2013) - Acceleware Ltd. (TSX VENTURE:AXE) will showcase their latest research and product advancements for seismic depth imaging at the 75th European Association of Geoscientists and Engineers (EAGE) conference. The Acceleware booth (#1830) will feature technical presentations for Reverse Time Migration (RTM), Full Waveform Inversion, 3D Elastic ...
    on June 11, 2013     Source: Marketwire


  1. Ayn Rand said, "We are fast approaching the stage of the ultimate inversion: the stage where the government is free to do anything it pleases, while the citizens may act only by permission; which is the stage of the darkest periods of human history,...
    on Mar 3, 2009 By: Ayn Rand Source: Citizen Economists

  2. "As long as you don't have an inversion layer," the Dodgers broadcaster Rick Monday said. "No, really, there are mountains out there, you just can't see them."
    on Oct 3, 2008 By: Rick Monday Source: New York Times

Word of the Day
infatuated infatuated
/ɪn ˈfæ tʃu ˌeɪ tɪd /