The term 'phase of life' can be defined as a period of time in a person's life that is characterized by certain events, experiences, and changes. The crossword solution for this term is AGE, which is an abbreviation for the word 'AGELESS'. AGE is a measure of the amount of time a person has been alive, and it is used to describe different stages of life such as childhood, adolescence, adulthood, and old AGE. Each phase of life brings its own unique challenges and opportunities, and it is important to recognize and appreciate the value of each stage.