The word is “porneia”, which your translation calls “adultery”. The Arndt, Gingrich, and Danker lexicon states that the word refers to “prostitution, unchastity, fornication, of every kind of unlawful sexual intercourse.”  This would include homosexuality.

The Catholic interpretation of it is that it describes something which we would consider today a cause for a declaration of nullity, a radical inability to accomplish and/or an intention against a requirement of marriage, monogamy.

This would mean that the putative marriage was invalid at its inception.