D defs.my
Entry 1 sense Webster, 1913

Exo-

· Ex·o- · IPA /ɛksoʊ-/
01 A prefix signifying out of, outside; as in exocarp, exogen, exoskeleton.
  1. 1.
    A prefix signifying out of, outside; as in exocarp, exogen, exoskeleton.