Irish edit

Etymology edit

From bith- + English chron.

Noun edit

bithchron m (genitive singular bithchroin)

  1. (geology) biochron

Declension edit

Mutation edit

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.