Definition of motus peculiaris in English:

motus peculiaris

Pronunciation /ˈməʊtəs pɪˌkjuːlɪˈɑːrɪs/

noun

rare Astronomy
  • Peculiar motion (of a star). Compare also "proper motion".

Origin

Late 19th century. From post-classical Latin motus peculiaris from classical Latin mōtus motion, movement + pecūliāris.