/re"treuh fleks'/ , adj.
1. bent backward; exhibiting retroflexion.
2. Phonet. articulated with the tip of the tongue curled upward and back against or near the juncture of the hard and soft palates; cacuminal; cerebral; coronal.
Also, retroflexed /re"treuh flekst'/ .
[ 1910-15; retroflexus (ptp. of retroflectere to bend back). See RETRO-, FLEX 1 ]