title: What does the word "concat" actually or originally mean?
body: <p>Recently I am reading a copy of source code from somewhere written in Java.</p>
  
  <p>There's a statement of a method likes:</p>
  
  <pre><code>public static &lt;T&gt; List&lt;T&gt; concat(List&lt;T&gt;... lists){
      ...
  }
  </code></pre>
  
  <p>and I wonder that whether it's suitable to name it "concat"? Originally, what does the word "concat" mean? Does it mean "CONnect ChAracTer" or other? </p>