The term "Holocaust" is also used in the context of the slaughter of Armenians in 1915 - which seems to have been used as a precedent by Hitler, who in face of questions about "Final Solution" is quoted as saying "Who, after all, speaks to-day of the annihilation of the Armenians?"

I do not think that when people in Turkey have been imprisoned for referring to this episode as "the Armenian Holocaust" it would be reasonable to infer that this happened because the words were seen as "antisemitic".

When the word is deployed it is intended to have shock effect, as an accusation that some action is comparable to that of the Nazis. I think using it in this way is generally a mistake, since it invites the response that the actions in question are not on the same scale as that of Nazi Germany, and thus can even tend to trivialise their actual horror by the comparison. However I do not think that it is correct to see it as an expression of antisemitism - a true antisemite might indeed be expected to see a comparison of Israel with Nazi Germany as unacceptable, because it would involve saying something favourable about the Jewish government.