Relating to or designed for elementary and high school students or education.
Abbreviation derived from the pronunciation of 'EL' (elementary) and 'HI' (high school), created in American English as a shorthand for educators and textbook publishers.
Elhi was a common term in mid-20th century educational publishing but has mostly disappeared—it's a fascinating example of how technical jargon becomes obsolete as speech patterns change and the education system evolves.
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