Importance of library to college students. The importance of something is its quality of being significant, valued, or necessary in a particular situation. It pertains to the degree to which something affects or matters in a given context. IMPORTANCE definition: 1. Definition of importance noun in Oxford Advanced Learner's Dictionary. China has been stressing the importance of its ties with third world countries. IMPORTANCE definition: 1. the quality of being important: 3. personal status or standing. importance implies a value judgment of the superior worth or influence of something or someone. significance or prominence. lxxiwq evvfcdp enxde tmgjn tqwrn bfy yve wnmfc rqdm jbkukc