dronuilleach

Irish

Etymology

From dron (“right, straight”) +‎ uilleach (“angular”) (from uillinn (“angle”) +‎ -ach). Calque of Medieval Latin orthogōnālis.

Adjective

dronuilleach (genitive singular masculine dronuilligh, genitive singular feminine dronuillí, plural dronuilleacha, not comparable)

1. (geometry) orthogonal

Declension

Declension of dronuilleach

	singular		plural (m/f)
Positive	masculine	feminine	(strong noun)	(weak noun)
nominative	dronuilleach	dhronuilleach	dronuilleacha; dhronuilleacha2
vocative	dhronuilligh		dronuilleacha
genitive		dronuillí	dronuilleacha	dronuilleach
dative	dronuilleach; dhronuilleach1	dhronuilleach; dhronuilligh (archaic)	dronuilleacha; dhronuilleacha2
Comparative	(not comparable)
Superlative	(not comparable)

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

• triantán dronuilleach

Mutation

Mutated forms of dronuilleach

radical	lenition	eclipsis
dronuilleach	dhronuilleach	ndronuilleach

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) “dronuilleach”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN