Commit and Join

• (v.t.) To give in trust; to put into charge or keeping; to intrust; to consign; -- used with to, unto.
• (v.t.) To confound.
• (v.i.) To sin; especially, to be incontinent.
• (v.t.) To put in charge of a jailor; to imprison.
• (v.t.) To join for a contest; to match; -- followed by with.
• (v.t.) To pledge or bind; to compromise, expose or endanger by some decisive act or preliminary step; -- often used reflexively; as, to commit one's self to a certain course.
• (v.t.) To do; to perpetrate, as a crime, sin or fault.

verb

• Perform an act, usually with a negative connotation.
  • usage: "perpetrate a crime"; "pull a bank robbery"
  • synonyms: perpetrate, pull
• Give entirely to a specific person, activity, or cause.
  • usage: "She committed herself to the work of God"; "give one's talents to a good cause"; "consecrate your life to the church"
  • synonyms: give, dedicate, consecrate, devote
• Cause to be admitted; of persons to an institution.
  • usage: "After the second episode, she had to be committed"; "he was committed to prison"
  • synonyms: institutionalize, institutionalise, send, charge
• Confer a trust upon.
  • usage: "The messenger was entrusted with the general's secret"; "I commit my soul to God"
  • synonyms: entrust, intrust, trust, confide
• Make an investment.
  • usage: "Put money into bonds"
  • synonyms: invest, put, place
• Engage in or perform.
  • usage: "practice safe sex"; "commit a random act of kindness"
  • synonyms: practice

(DoD) The process of committing one or more air interceptors or surface-to-air missiles for interception against a target track.

noun

• The shape or manner in which things come together and a connection is made.
  • synonyms: articulation, joint, juncture, junction
• A set containing all and only the members of two or more given sets.
  • usage: "let C be the union of the sets A and B"
  • synonyms: union, sum

verb

• Become part of; become a member of a group or organization.
  • usage: "He joined the Communist Party as a young man"
  • synonyms: fall in, get together
• Cause to become joined or linked.
  • usage: "join these two parts so that they fit together"
  • synonyms: bring together
• Come into the company of.
  • usage: "She joined him for a drink"
• Make contact or come together.
  • usage: "The two roads join here"
  • synonyms: conjoin
• Be or become joined or united or linked.
  • usage: "The two streets connect to become a highway"; "Our paths joined"; "The travelers linked up again at the airport"
  • synonyms: connect, link, link up, unite

• (v.t.) To enjoin upon; to command.
• (v.i.) To be contiguous, close or in contact; to come together; to unite; to mingle; to form a union; as, the hones of the skull join; two rivers join.
• (v.t.) To accept or engage in, as a contest; as, to join encounter, battle, issue.
• (v.t.) To bring together, literally or figuratively; to place in contact; to connect; to couple; to unite; to combine; to associate; to add; to append.
• (v.t.) To associate one's self to; to be or become connected with; to league one's self with; to unite with; as, to join a party; to join the church.
• (v.t.) To unite in marriage.
• (n.) The line joining two points; the point common to two intersecting lines.