retro-, retr-

1. To give back or to give something back to someone; such as, land or a territory.
2. To go back or to recede.
3. Etymology: from Latin retrocedere, "to go back" from retro-, "back" + cedere, "to go".

Characterized by running, or stepping, backward.

1. The act of bending backward.
2. An articulatory gesture made by turning the tip of the tongue back against the roof of the mouth.
3. A turning or tilting backward of an organ or body part.
4. A bending backward of the body of the uterus upon the cervix.
5. The acoustic quality resulting from retroflex articulation.

1. Bent, curved, or turned backward.
2. Pronouncing certain words and/or letters with the tip of the tongue turned back against the roof of the mouth.
3. A sound pronounced with the tongue in retroflex position, as the sound "r" in some varieties of English.