Definition of changeant in English:
changeant
adjective ˈtʃeɪn(d)ʒ(ə)nt
Especially of fabric: that changes colour or tint when viewed from a different angle or in a different light.
Origin
Mid 17th century; earliest use found in Zachary Boyd (1585–1653), Church of Scotland minister and university administrator. From French changeant, use as adjective of present participle of changer change.