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altermatic.

Describing a certain combinatorial lower bound of a chromatic number of a graph.

10 characters4 syllables approx.English language

Meaning & usage

adj/ˌɒl.təˈmæt.ɪk/Received-Pronunciation/ˌɔːl.tə-/Received-Pronunciation/ˌɔl.təɹˈmæt.ɪk/General-American/ˌɑl.təɹ-/General-American
  1. Describing a certain combinatorial lower bound of a chromatic number of a graph.

    not-comparable
Where this word comes from

Coined by mathematicians Meysam Alishahiand and Hossein Hajiabolhassan in 2014 for the 2015 paper "On the chromatic number of general Kneser hypergraphs" as a blend of alternating + chromatic on the grounds that the chromatic bound is given by a longest subsequence in which every pair of consecutive terms differs (loosely, the subsequence "alternates").

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.