"There is reason to believe that a crime has been committed," she says in a statement. "Considering information available at present, my judgement is that the classification of the crime is rape."
Wikipedia [4] gives the Swedish term as "våldtäkt", which Google translates as "Rape":
"On 18 November 2010, the Stockholm District Court ordered Assange detained in absentia, on request by prosecutor Marianne Ny. As basis for the ruling, the court stated Julian Assange to be suspected on reasonable grounds to have committed rape (våldtäkt), unlawful coercion (olaga tvång), and three cases of sexuellt ofredande — which has been variously translated as "sexual molestation", "sexual assault", "sexual misconduct", "sexual annoyance", "sexual unfreedom", "sexual misdemeanour", and "sexual harassment" [3]
(The above, to be clear, are allegations).
[1] http://www.bbc.co.uk/news/world-europe-11949341
[2] http://www.bbc.co.uk/news/world-europe-33907874
[3] http://www.theguardian.com/media/2015/aug/13/julian-assange-...
[4] https://en.wikipedia.org/wiki/Assange_v_Swedish_Prosecution_...