triantánach

See also: triantanach

Irish

Etymology

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

Adjective

triantánach (genitive singular masculine triantánaigh, genitive singular feminine triantánaí, plural triantánacha, comparative triantánaí)

1. triangular, three-cornered; deltoid

Declension

Declension of triantánach

	Singular		Plural (m/f)
Positive	Masculine	Feminine	(strong noun)	(weak noun)
Nominative	triantánach	thriantánach	triantánacha; thriantánacha²
Vocative	thriantánaigh		triantánacha
Genitive		triantánaí	triantánacha	triantánach
Dative	triantánach; thriantánach¹	thriantánach; thriantánaigh (archaic)	triantánacha; thriantánacha²
Comparative	níos triantánaí
Superlative	is triantánaí

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

Derived terms

• puball triantánach (“ridge tent”)

Mutation

Irish mutation
Radical	Lenition	Eclipsis
triantánach	thriantánach	dtriantánach
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

• Ó Dónaill, Niall (1977) “triantánach”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• “deltoid”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2024
• “triangular”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2024