- Conjoined twins in which the bodies are joined laterally. See conjoined twins, under twin. [ecto- + G. pagos, something fixed]
* * *ec·top·a·gus (ek-topґə-gəs) [ecto- + -pagus] conjoined twins connected along the side of the body, so that the components are definitely right and left, the upper and/or lower limbs at the juncture being represented by single bilateral median limbs.
Medical dictionary. 2011.