Irish

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Etymology

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From bith- + English chron.

Noun

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bithchron m (genitive singular bithchroin)

  1. (geology) biochron

Declension

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Mutation

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Irish mutation
Radical Lenition Eclipsis
bithchron bhithchron mbithchron
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.