"having the quality of promoting or furthering," 1640s, from conduce + -ive. Related: Conduciveness.
Entries linking to conducive
conduce v.
c. 1400, "to lead, conduct" (a sense now obsolete), from Latin conducere "to lead or bring together, contribute, serve," from assimilated form of com "with, together" (see con-) + ducere "to lead" (from PIE root *deuk- "to lead"). Intransitive sense of "aid in or contribute toward a result" is from 1580s.
-ive
word-forming element making adjectives from verbs, meaning "pertaining to, tending to; doing, serving to do," in some cases from Old French -if, but usually directly from Latin adjectival suffix -ivus (source also of Italian and Spanish -ivo). In some words borrowed from French at an early date it has been reduced to -y (as in hasty, tardy).