Rh

2 definitions found

From WordNet (r) 2.0 [wn]:

  Rh
       n 1: a blood group antigen possessed by Rh-positive people; if an
            Rh-negative person receives a blood transfusion from an
            Rh-positive person it can result in hemolysis and anemia
            [syn: {rhesus factor}, {Rh factor}]
       2: a white hard metallic element that is one of the platinum


          group and is found in platinum ores; used in alloys with
          platinum [syn: {rhodium}, {atomic number 45}]
       3: any of several hormones produced in the hypothalamus and
          carried by a vein to the anterior pituitary gland where
          they stimulate the release of anterior pituitary hormones;
          each releasing hormone causes the anterior pituitary to
          secrete a specific hormone [syn: {releasing hormone}, {releasing
          factor}, {hypothalamic releasing hormone}, {hypothalamic
          releasing factor}]

From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [vera]:

  RH
       Request Header