triantánúil

Irish

Etymology

From triantán (“triangle”) +‎ -úil (adjectival suffix).

Adjective

triantánúil (genitive singular masculine triantánúil, genitive singular feminine triantánúla, plural triantánúla, comparative triantánúla)

1. trigonometric, trigonometrical

Declension

Declension of triantánúil

	Singular		Plural (m/f)
Positive	Masculine	Feminine	(strong noun)	(weak noun)
Nominative	triantánúil	thriantánúil	triantánúla; thriantánúla²
Vocative	thriantánúil		triantánúla
Genitive		triantánúla	triantánúla	triantánúil
Dative	triantánúil; thriantánúil¹	thriantánúil	triantánúla; thriantánúla²
Comparative	níos triantánúla
Superlative	is triantánúla

¹ When the preceding noun is lenited and governed by the definite article.
² When the preceding noun ends in a slender consonant.

Related terms

• triantánacht (“trigonometry”)

Mutation

Irish mutation
Radical	Lenition	Eclipsis
triantánúil	thriantánúil	dtriantánúil
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

• Ó Dónaill, Niall (1977) “triantánúil”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN