extrados

English

Detail of the skew arch bridge at Boxmoor, showing the stepped extrados (outer curve of the arch)

Etymology

From French extradossé (“outer curve”) from Latin extra (“outside”) + dos (“back”) (from Latin dorsum).

Noun

extrados (plural extradoses or extrados)

1. (architecture) The outer or upper curve of an arch.
   • 1954 January, “Strengthening of Coquet Viaduct”, in Railway Magazine, page 19:

     The two lower rows of tubes at each end pier were then drilled through to the extrados of the brickwork to act as weep holes and assist in the drainage from the backs of the arches.

Coordinate terms

• intrados

Derived terms

• extradosed

Romanian

Etymology

Borrowed from French extrados.

Noun

extrados n (plural extradosuri)

1. extrados

Declension

	singular			plural
	indefinite	definite		indefinite	definite
nominative-accusative	extrados	extradosul		extradosuri	extradosurile
genitive-dative	extrados	extradosului		extradosuri	extradosurilor
vocative	extradosule			extradosurilor