The term 'lowest point of anything' can be summarized by the word 'NADIR', which is a 5-letter word. NADIR is defined as the lowest point of any object, situation, or cycle. It is derived from the Arabic word 'nazir', which means 'OPPOSITE'. In astronomy, NADIR is the point on the celestial sphere that is directly below an observer. In geography, it is the lowest point on the surface of the Earth. In medicine, it is the lowest point of a patient's vital signs. In business, it is the lowest point of a company's stock price.