pressor

2 definitions found

pressor - Collaborative International Dictionary of English v.0.48 :

  Pressor \Press"or\, a. (Physiol.)
     Causing, or giving rise to, pressure or to an increase of
     pressure; as, pressor nerve fibers, stimulation of which
     excites the vasomotor center, thus causing a stronger
     contraction of the arteries and consequently an increase of
     the arterial blood pressure; -- opposed to depressor.
     --Landois & Stirling.
     [1913 Webster]

pressor - WordNet (r) 2.1 (2005) :

  pressor
      adj 1: increasing (or tending to increase) blood pressure;
             "pressor reflexes"
      n 1: any agent that causes a narrowing of an opening of a blood
           vessel: cold or stress or nicotine or epinephrine or
           norepinephrine or angiotensin or vasopressin or certain
           drugs; maintains or increases blood pressure [syn:
           vasoconstrictor, vasoconstrictive, pressor]