Plural of appendix; multiple supplementary sections added to the end of a book or document, or multiple small tube-like structures attached to the large intestine in animals.
From Latin 'appendix' meaning 'an addition' (from 'appendere' meaning 'to hang to'). The standard English plural '-es' was added, though 'appendices' is also correct.
Both 'appendixes' and 'appendices' are correct—British scholars traditionally prefer the Latin plural 'appendices,' while American writers use 'appendixes,' showing how English borrowed from Latin but keeps evolving its own rules!
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