pentazocine Hear it!

pentazocine Definition

☆ pen·ta·zo·cine (pen′tə zō′sēn′, -sin)

noun

a pain-killing, synthetic drug derived from coal tar: used in place of morphine because it is less addictive

Etymology: penta- + (a)z(o)- + -ocine, suffix for an 8-membered ring < L oc(to), eight + -ine