conformation (n.)

1510s, "act of adjusting or bringing into conformity," from Latin conformationem (nominative conformatio) "a symmetrical forming," noun of action from past participle stem of conformare "to fashion, to form, to shape; educate; modify," from assimilated form of com "together" (see con-) + formare "to form" (see form (v.)). Meaning "manner in which a body is formed" is from 1640s.