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introflexed
introflexed adj. 
/ˌɪntrəˈflɛkst/, /ˌɪntrəˈflɛkst/ [see flex v.] bent or curved inwards.
Brit. /ˈɪntrəflɛkst/
, /ˈɪntrəflɛkst//ˌɪntrəˈflɛkst/U.S. /ˈɪntrəˌflɛkst/
, /ˈɪntrəˌflɛkst//ˌɪntrəˈflɛkst/ΘΠ
the world > space > shape > curvature > types of curvature > [adjective] > curved inwards
combingc1503
inbenta1586
inbending1622
inflexed1661
incurvated1665
inflex1753
incurvate1776
incurved1816
rolled-in1832
introflexed1846
incurving1865
inflected1870
inwound1876
1846 J. E. Worcester Universal Dict. Eng. Lang. Introflexed, bent inward. Smith.
1866 J. Lindley & T. Moore Treasury Bot. Introcurvus, Introflexus, Introflexed, curved inwards.
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