Well here’s the definition according to UN that basically the whole world agrees on:

Definition - Convention on the Prevention and Punishment of the Crime of Genocide - Article II

In the present Convention, genocide means any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such:

• Killing members of the group;
• Causing serious bodily or mental harm to members of the group;
• Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part;
• Imposing measures intended to prevent births within the group;
• Forcibly transferring children of the group to another group.

One scholar is noted as saying this:

Raz Segal, the program director of genocide studies at Stockton University, concretely says it is a “textbook case of genocide.” Segal believes that Israeli forces are completing three genocidal acts, including, “killing, causing serious bodily harm, and measures calculated to bring about the destruction of the group.” He points to the mass levels of destruction and total siege of basic necessities—like water, food, fuel, and medical supplies—as evidence.

As always there are some who disagree. But I do not misunderstand the meaning of the word.

Also it’s hilarious that you say “Denying a hostile belligerent nation land”. That’s so incredibly fucked up. They are illegal settlers who are murdering the current residents in order to steal their land. What mental gymnastics it must take to call that “denying land”.