sigmoid

sigm-oid "Sigma ähnlich"

• lat. sigmoideus
• agrie. σῑγμοειδής (sīgmoeidḗs, “in der Form des Sigma”), von σῖγμᾰ sîgmă, “sigma” +‎ -ο- (-o-) +‎ -ειδής (-eidḗs, “-oid, -like”); Equivalent to sigma +‎ -oid.