D defs.my
Entry 1 sense Webster, 1913

Extra-

· Ex·tra- · IPA
01 A Latin preposition, denoting beyond, outside of; -- often used in composition as a prefix signifying outside of, beyond, besides, or in ad…
  1. 1.
    A Latin preposition, denoting beyond, outside of; -- often used in composition as a prefix signifying outside of, beyond, besides, or in addition to what is denoted by the word to which it is prefixed.