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retro-

[L. retro, back, backward, behind] Prefix meaning backward, back, behind.

retroaction

(rĕ″trō-ăk′shŭn) Action in a reverse direction.

retrobuccal

(rĕt″rō-bŭk′ăl) [L. retro, back, + bucca, cheek] Pert. to the back part of the mouth or the area behind the mouth.

retrocecal

(rĕt″rō-sē′kăl) [L. retro, back, + caecum, cecum] Behind or pert. to the area posterior to the cecum.

retrocervical

(rĕt″rō-sĕr′vĭ-kăl) [L. retro, back, + cervix, neck] Posterior to the cervix uteri.

retroclination

(re″trō-klĭ-nā′shŏn) In dentistry, the posterior inclination of an incisor.

retrocolic

(rĕt″rō-kŏl′ĭk) [L. retro, back, + Gr. kolon, colon] Posterior to the colon.

retrocollis

(re″trö-kol′is) [retro- + collum] Torticollis with spasms affecting the posterior neck muscles. SYN: retrocollic spasm.

retroconduction

(rĕt″rō-kŏn-dŭk′shŭn) [″ + ″ ] Backward conduction, i.e., a reversed flow of ions or electrical impulses, esp. used when speaking of disturbances in cardiac rhythm.

retrocursive

(rĕt″rō-kŭr′sĭv) [L. retro, back, + curro, to run] Stepping or turning backward.

retrodeviation

(rĕt″rō-dē″vē-ā′shŭn) [″ + deviare, to turn aside] Backward displacement, as of an organ.

retrodisplacement

(rĕt″rō-dĭs-plās′mĕnt) [″ + Fr. desplacer, displace] Backward displacement of a part.

retroesophageal

(re″trō-ĕ-sof″ă-jē′ăl) [retro- + esophageal] Posterior to the esophagus.

retrofilling

(re′trō-fil″ing) In dentistry, the placement of filling material in a root canal through an opening made in the apex of the tooth.

retroflexion

(rĕt″rō-flĕk′shŭn) A bending or flexing backward. retroflexed, adj.

r. of uterus A condition in which the body of the uterus is bent backward at an angle with the cervix, whose position usually remains unchanged.

retrognathia

(rĕt″rō-năth′ē-ă) [L. retro, back, + Gr. gnathos, jaw] Location of the mandible behind the frontal plane of the maxilla.

retrognathism

(rĕt″rō-năth′ĭzm) [″ + Gr. gnathos, jaw] The condition of having retrognathia.

retrograde

(re′trō-grād″) [retro- + L. gradi, to step, walk] 1. Moving backward. 2. Degenerating from a better to a worse state.

retrograde flow

The flow of fluid in a direction opposite to that considered normal.

retrograde pyelography

A surgical procedure used to visualize the renal pelvis and ureter in which an endoscope is placed through the urethra into the urinary ...

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