The term "every" is a determiner used to refer to all members of a group without exception. It emphasizes inclusivity, indicating that no individual or item is excluded. For example, in the phrase "every student," it means all students in a particular context or setting. In mathematics, "every" can also relate to universal quantification, where a statement applies to all elements within a specified set. For instance, "every number is either even or odd" asserts that this property holds true for all integers, highlighting the concept of completeness in logical reasoning.