portal frame

noun

civil engineering building trades a frame, usually of steel, consisting of two uprights and a cross beam at the top: the simplest structural unit in a framed building or a doorway

Nearby words

  1. portal,
  2. portal canal,
  3. portal circulation,
  4. portal cirrhosis,
  5. portal fissure,
  6. portal hypertension,
  7. portal lobule of liver,
  8. portal system,
  9. portal vein,
  10. portal-systemic encephalopathy

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012