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Webster 1913 Edition

Noun.

[F., fr. L.

intra

within + F.

dos

the back, L.

dorsum

. Cf.

(Arch.)

The interior curve of an arch; esp., the inner or lower curved face of the whole body of voussoirs taken together. See

An intrados (inner curve of an arch)

intrados ‎(plural intradoses or intrados)