The combining form ‘radi o’ pertains to rays or radiation. It is often used in medical and scientific terminology to refer to things related to radiation, as well as x-rays, and other types of electromagnetic waves.
For example, in the word ‘radiology,’ ‘radi o’ signifies the study of x-rays and other forms of radiation used in medical imaging. Understanding this combining form helps in deciphering many words in the fields of medicine and physics, allowing for clearer communication about processes and technologies that involve radiation.