Heideggerian terminology is the kind of language used by a German philosopher, Martin Heidegger. Heidegger wrote a lot about the meaning of life and how people think about it. He wanted to get people to think differently about things. He studied philosophy, which is the study of the big questions in life. He used a lot of big and confusing words in his writings, so people who wanted to understand him had to learn those special words. Some examples of Heidegger's words are 'Dasein' (existence), 'Vorhanden' (ready to hand), 'Verfallen' (falling away) and 'Geworfenheit' (thrownness). Heidegger's words can help us think more deeply about life and the world around us.