attractancy [uh-trak-tuh n-see]
1. the capacity, especially of a pheremone, to attract.
Also called at·trac·tance.
Origin: Attractant is to attractance and attractancy as repellent is to repellence and repellency. Both sets of words are used mostly in biochemistry to describe chemicals, such as pheromones or insectifuges, that attract, drive away, or affect the behavior of other creatures. Attractancy entered English in the 20th century.
Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.