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

Positive	singular		plural
	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

Mutated forms of triantánach

radical	lenition	eclipsis
triantánach	thriantánach	dtriantánach

Note: Certain mutated forms of some words can never occur in standard Modern Irish.
All possible mutated forms are displayed for convenience.

Further reading

• Ó Dónaill, Niall (1977), “triantánach”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• “deltoid”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2025
• “triangular”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2025