In this Article, unless a different meaning plainly is required:

  (1) the definitions given in Section 210.0 apply;

  (2) "Sexual intercourse" includes intercourse per os or per anus, with some penetration however slight;  emission is not required;

  (3) "Deviate sexual intercourse" means sexual intercourse per os or per anus between human beings who are not husband and wife, and any form of sexual intercourse with an animal.