Retrochoir, rē′trō-kwīr, n. (archit.) an extension of a church behind the high altar, as a chapel.
Retroclusion, rē-trō-klōō′zhun, n. a method of using the pin in acupressure.
Retrocollic, rē-trō-kol′ik, adj. pertaining to the back of the neck.
Retrodate, rē′trō-dāt, v.t. to assign a date to a book earlier than its actual publication.
Retroduct, rē-trō-dukt′, v.t. to draw back: to withdraw.—n. Retroduc′tion.
Retroflex, rē′trō-fleks, adj. reflexed, bent backward—also Rē′troflexed.—n. Retroflec′tion. [L. retro, backward, flectĕre, flexum, to bend.]
Retrofract, -ed, rē′trō-frakt, -ed, adj. (bot.) bent sharply back, so as to appear as if broken. [L. retro, backward, fractus, pa.p. of frangĕre, fractum, to break.]
Retrograde, ret′rō-, or rē′trō-grād, adj. going backward: falling from better to worse: contrary: (biol.) becoming less highly organised, as 'a retrograde theory:' swimming backwards, as many animals: (astron.) moving westwards relatively to the fixed stars.—v.i. to go backwards.—ns. Retrogradā′tion, deterioration; Rē′trogress, falling off; Rētrogres′sion, a going backward: a decline in quality or merit.—adjs. Rētrogres′sional, Rētrogress′ive.—adv. Rētrogress′ively.—n. Rētrogress′iveness. [L. retrogradus, going backward—retro, backward, gradi, gressus, to go.]
Retrolingual, rē-trō-ling′gwal, adj. serving to retract the tongue.
Retromingent, rē-trō-min′jent, adj. urinating backward.—n. Retromin′gency.—adv. Retromin′gently.