triantánacht

Irish

Etymology

From triantán (“triangle”) +‎ -acht.

Noun

triantánacht f (genitive singular triantánachta)

  1. (mathematics) trigonometry

Declension
Declension of triantánacht

Third declension

Bare forms (no plural for this noun):

Case Singular
Nominative triantánacht
Vocative a thriantánacht
Genitive triantánachta
Dative triantánacht

Forms with the definite article:

Case Singular
Nominative an triantánacht
Genitive na triantánachta
Dative leis an triantánacht

don triantánacht

Derived terms
  • triantánacht phlánach (“plane trigonometry”)

Mutation
Irish mutation
Radical Lenition Eclipsis
triantánacht thriantánacht dtriantánacht
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading
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