Irish

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Etymology

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ard- (high) +‎ folús (vacuum, void)

Noun

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ardfholús m (genitive singular ardfholúis, nominative plural ardfholúis)

  1. (physics) high vacuum

Declension

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Mutation

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Irish mutation
Radical Eclipsis with h-prothesis with t-prothesis
ardfholús n-ardfholús hardfholús t-ardfholús
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.