main menu   -   articles   -   prostate   -   stories   -   sexuality   -   resources   -   glossary   -   search     From Phoenix5's Prostate Cancer Glossary erection Synonyms: hard-on Definition: (ee-REK-shun) When the penis is filled with blood and becomes swollen and firm. This is prompted by the cavernous nerves, unless they are cut or damaged in treatment. See erectile dysfunction. There is more information and anatomical drawings here at Phoenix5. make another selection #s   A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  WXYZ main menu   -   articles   -   prostate   -   stories   -   sexuality   -   resources   -   glossary   -   search The Glossary Booklet   -   The Personal Edition Definitions are provided for education only and are not medical advice. Created exclusively for Phoenix5. © 2002 Phoenix5.