Source : Webster's Revised Unabridged Dictionary (1913)

Into \In"to\, prep. [In + to.]
   To the inside of; within. It is used in a variety of
   applications.

   1. Expressing entrance, or a passing from the outside of a
      thing to its interior parts; -- following verbs expressing
      motion; as, come into the house; go into the church; one
      stream falls or runs into another; water enters into the
      fine vessels of plants.

   2. Expressing penetration beyond the outside or surface, or
      access to the inside, or contents; as, to look into a
      letter or book; to look into an apartment.

   3. Indicating insertion; as, to infuse more spirit or
      animation into a composition.

   4. Denoting inclusion; as, put these ideas into other words.

   5. Indicating the passing of a thing from one form,
      condition, or state to another; as, compound substances
      may be resolved into others which are more simple; ice is
      convertible into water, and water into vapor; men are more
      easily drawn than forced into compliance; we may reduce
      many distinct substances into one mass; men are led by
      evidence into belief of truth, and are often enticed into
      the commission of crimes'into; she burst into tears;
      children are sometimes frightened into fits; all persons
      are liable to be seduced into error and folly.

   Note: Compare {In}.