intrados

intradossemicircular arch

in·tra·dos

I0205100 (ĭn′trə-dŏs′, -dō′, ĭn-trā′dŏs′, -dōs′)n. pl. in·tra·dos (-dōz′) or in·tra·dos·es (-dŏs′ĭz) Architecture The inner curve of an arch.

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[French : intra-, within (from Latin intrā-; see intra-) + dos, back (from Old French, from Latin dorsum).]

intrados

(ɪnˈtreɪdɒs) n, pl -dos or -doses (Architecture) architect the inner curve or surface of an arch or vault. Compare extrados[C18: from French, from intra- + dos back, from Latin dorsum]

in•tra•dos

(ˈɪn trəˌdɒs, -ˌdoʊs, ɪnˈtreɪ dɒs, -doʊs)

n., pl. -dos (-ˌdoʊz, -doʊz) -dos•es. the interior curve or surface of an arch or vault. Compare extrados. [1765–75; < French, =intra- intra- + dos back]

Thesaurus

Noun

1.

intrados - the interior curve of an arch curve, curved shape - the trace of a point whose direction of motion changes