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metamerism

noun/ˌmɛtəˈmɛrɪzəm/

the phenomenon where two colors appear to be the same under certain lighting conditions but differ under others

The metamerism of the paint colors led to confusion when trying to match them under different lighting conditions.

color matchingcolor constancyhue shift
word origin — Derived from the Greek word 'metameros', meaning 'having different parts' ('meta' meaning 'beyond' and 'meros' meaning 'part').

Word Ultra — Set 248

Set 248 of Word Ultra covers 5 words: metamerism, hebetude, gerontocracy, jejunostomy, gallipot. Each entry below includes its definition, an example sentence, and synonyms — practice them with the interactive cards above.

  1. metamerism · noun/ˌmɛtəˈmɛrɪzəm/

    the phenomenon where two colors appear to be the same under certain lighting conditions but differ under others

    The metamerism of the paint colors led to confusion when trying to match them under different lighting conditions.

    Synonyms: color matching, color constancy, hue shift

    Origin: Derived from the Greek word 'metameros', meaning 'having different parts' ('meta' meaning 'beyond' and 'meros' meaning 'part').

  2. hebetude · noun/ˈhɛbɪˌtud/

    dullness of mind or ability to think

    The professor was concerned about the hebetude of his students, who seemed disinterested and unable to engage with the material.

    Synonyms: obtuseness, dullness, lethargy

    Origin: from Latin 'hebetudo', from 'hebes' meaning 'blunt' or 'dull'

  3. gerontocracy · noun/ˌdʒɛr.ənˈtɑː.krə.si/

    a government or society in which the elderly hold power

    In a gerontocracy, the policies often reflect the interests of the older demographic rather than the needs of younger generations.

    Synonyms: seniority, elderocracy, ageism

    Origin: From the Greek 'geron' meaning 'old man' and 'kratos' meaning 'power' or 'rule'.

  4. jejunostomy · noun/dʒɪˈdʒuːnɑˌstɑmi/

    a surgical procedure to create an opening into the jejunum for feeding purposes

    The patient required a jejunostomy to ensure proper nutritional intake after surgery.

    Synonyms: enterostomy, feeding jejunostomy, jejunal access

    Origin: from Middle French 'jejun', from Latin 'jejunus' meaning 'fasting, hungry', combined with 'stoma' meaning 'mouth' in Greek.

  5. gallipot · noun/ˈɡælɪˌpɑt/

    a small container or jar used for holding liquids or substances

    The chemist carefully measured the solution into the gallipot before starting the experiment.

    Synonyms: jar, vessel, container

    Origin: Derived from the Middle English 'galipot', which comes from the Old French 'galipot', possibly influenced by Latin 'galla' meaning 'gall'.