in·tra·dos (ĭntrə-dŏs′, -dō′, ĭn-trādŏs′, -dōs′)
n. pl. in·tra·dos (-dōz′) or in·tra·dos·es (-dŏs′ĭz)
The inner curve of an arch.
[French : intra-, within (from Latin intrā-; see INTRA-) + dos, back (from Old French, from Latin dorsum).]
(click for a larger image)intrados
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