Arcades ambo (L.), Arcadians both, both alike.
arcana cælestia (L.), celestial mysteries.
arcana imperii (L.), state secrets.
arc de triomphe (Fr.), triumphal arch.
arc-en-ciel (Fr.), rainbow.
Archæus (Late L. from Gr.), a personification by Paracelsus of animal and vegetable life.
ardentia verba (L.), words that burn, glowing language.
areb (Hind. arb), a sum of 10 crore, or 100,000,000.
argala (Hind. hargīlā), the Indian adjutant-bird or gigantic crane.
argent comptant (Fr.), ready money.