vt 1 a  :  to restrain from free or spontaneous activity esp. through the operation of inner psychological or external social constraints <an ed person>   b  :  to check or restrain the force or vitality of < aggressive tendencies>   2 a  :  to reduce or suppress the activity of <a presynaptic neuron can not only excite a postsynaptic neuron but can also it -H. W. Kendler>   b  :  to retard or prevent the formation of  c  :  to retard, interfere with, or prevent (a process or reaction) < ovulation>  .
 
 
 
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