(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
- Portal hypertension
portal hypertension n. Hypertension in the portal system as seen in cirrhosis of the liver and other conditions causing obstruction to the portal vein.
[pawr-tl, pohr-] /ˈpɔr tl, ˈpoʊr-/ noun 1. a door, gate, or entrance, especially one of imposing appearance, as to a palace. 2. an iron or steel bent for bracing a framed structure, having curved braces between the vertical members and a horizontal member at the top. 3. an entrance to a tunnel or mine. 4. […]
- Portal lobule of liver
portal lobule of liver n. A polygonal mass of liver tissue that at its center has a portal canal and at its periphery several central hepatic veins.
- Portal site
noun a Web site that offers miscellaneous content in an effort to become the home page for users Word Origin from portal meaning ‘gateway’