adj. 1. Abbr. Jr. Used to distinguish a son from his father when they have the same given name. 2. Intended for or including youthful persons: a junior sports league. 3. Lower in rank or shorter in length of tenure: a junior officer; the junior senator. 4. Of, for, or constituting students in the third year of a US high school or college: the junior class. 5. Lesser in scale than the usual. n. 1. A person who is younger than another: a sister four years my junior. 2. A person lesser in rank or time of participation or service; subordinate. 3. A student in the third year of a US high school or college. 4. A class of clothing sizes for girls and slender women. Also called junior miss. [Middle English, from Latin iūnior, comparative of iuvenis, young; see yeu- in the Appendix of Indo-European roots.] |
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