Indexes (plural of index) refers to the plural form used for multiple indicators, signs, or pointers in data, books, or collections. In everyday use it denotes a set of indexes, often in reference to a catalog or list that helps locate information. The term is common in computing, statistics, and library science, and can also function as a verb in specialized contexts.
"The library catalog uses multiple indexes to guide you to relevant books."
"We updated our financial reports with several new indexes to track performance."
"Indexes in this dataset help you quickly locate anomalies."
"The book’s index lists topics alphabetically for easy reference."
The word index originates from Latin index, meaning “pointer, indicator, forefinger,” via Old French indice and Middle English indici, evolving to English index in the 14th–15th centuries. Initially, index signified a table of contents or an inventor’s signpost. In scholarly and bibliographic use, it referred to an alphabetical list of topics with page references. The plural form indexes is standard in many English dialects, though indices is also common in mathematical or technical contexts. In computing, index broadened to refer to data structures that enable fast lookup, with plural indices or indexes. The sense shift from a physical pointer (a sign or index finger) to digital pointers mirrors broader information-organization trends, where indexes guide retrieval, retrieval performance, and data indexing systems. First known use of the singular in English appears in the 14th century, with printed indexes emerging in early modern libraries, and by the 20th century, computers popularized index structures in algorithms and databases.
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💡 These words have similar meanings to "Indexes" and can often be used interchangeably.
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Words that rhyme with "Indexes"
-xes sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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Say IN-dex-iz with the primary stress on the first syllable. IPA US/UK/AU: /ˈɪn.dɛk.sɪz/. The first vowel is a short I as in in, the second vowel is a short e as in bed, and the final syllable ends with -iz. Keep the sibilant clear: /z/ at the end. Try to keep the jaw relaxed and avoid an unnecessary schwa in the middle.
Common mistakes include reducing the first syllable to a mere /ɪ/ or misplacing the second vowel as /ɪ/ or /iː/ (e.g., IN-diks-iz or IN-dex-iz). Another error is not voicing the final /z/ as a clear /z/ instead of a voiceless /s/. Focus on maintaining /ˈɪn.dɛk.sɪz/ with a crisp /z/. Practice the two middle consonants /d/ and /k/ as a quick, light touch between vowels.
In US, UK, and AU, the first syllable remains stressed: /ˈɪn.dɛk.sɪz/. The main differences come in the vowel quality; US often prefers /ˈɪn.dɛk.sɪz/ with a slightly more open /ɛ/ in the second syllable, UK and AU may have a tighter /ɛ/ or near /eɪ/ in rapid speech. The final /z/ is typically voiced across all. Rhoticity or non-rhotic differences do not affect the pronunciation of this word in most contexts, but intonation patterns around lists can vary by region.
The difficulty lies in the cluster of consonants between vowels and the final /z/. The sequence /n.dɛk/ requires quick, light articulation with the /d/ and /k/ being separate but compact; the /z/ at the end is voiced and should not blur with preceding vowels. Also, maintaining clear syllable boundaries in rapid speech can be tricky. Practice by isolating /ˈɪn/ and /dɛk/ and then blending with a final /z/.
A learner might wonder about the plural still ending with /ɪz/ rather than an -s sound only. In 'indexes' the end is /ɪz/, a general plural ending that follows the rule for words ending in -x producing /ɪz/ in the plural; the singular would be /ˈɪndɛks/. The question often arises whether to use 'indices' in professional writing, but in everyday usage 'indexes' is standard for most English contexts.
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