APPLY definition: to make use of as relevant, suitable, or pertinent. See examples of apply used in a sentence. apply 1. request formally If you apply to have something or apply for something, you write asking formally to be allowed to have it or do it. I've applied for another job. Sally and Jack applied to adopt another child. APPLY definition: 1. to request something, usually officially, especially in writing or by sending in a form: 2…. Learn more. apply meaning, definition, what is apply: to make a formal request, usually writte.: Learn more. APPLY meaning: 1. to request something, usually officially, especially in writing or by sending in a form: 2…. Learn more. In general, JIT compilation is only possible when the function passed to apply has type stability (variables in the function do not change their type during the execution). Apply means to put on a surface, like to apply makeup to your face before work. Apply also means to ask in a formal way. Long before you applied the makeup, you had to apply for the job. The meaning of APPLY is to put to use especially for some practical purpose. How to use apply in a sentence. To be eligible, you must be a U.S. resident, at least 18 years old (or the legal age in your state), have an accepted credit or debit card, and have an Apple Account. Additional eligibility criteria apply. Device must be in good condition upon return; damage fees may apply. to make use of as relevant, suitable, or pertinent: to apply a theory to a problem. to put to use, esp. for a particular purpose: to apply pressure to open a door.