Into

• POS: Preposition
• HYPHEN: in=to

CIDE DICTIONARY

Into, prep. [In + to.].

•  To the inside of; within. It is used in a variety of applications.  [1913 Webster]
•  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.  [1913 Webster]
•  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.  [1913 Webster]
•  Indicating insertion; as, to infuse more spirit or animation into a composition.  [1913 Webster]
•  Denoting inclusion; as, put these ideas into other words.  [1913 Webster]

  "Compare In."  [1913 Webster]
•  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; she burst into tears; children are sometimes frightened into fits; all persons are liable to be seduced into error and folly.  [1913 Webster]

OXFORD DICTIONARY

Into, prep.
1 expressing motion or direction to a point on or within (walked into a tree; ran into the house).
2 expressing direction of attention or concern (will look into it).
3 expressing a change of state (turned into a dragon; separated into groups; forced into cooperation).
4 colloq. interested in; knowledgeable about (is really into art).

Etymology

OE into (as IN, TO)