<style>
table {
table-layout:fixed;
width:50%;
}
td#one {
width:10%;
border:1px solid red;
word-wrap: break-word;

}
td#two {

border:1px solid blue;
overflow:hidden;
}

</style>
</head>
<body>
<table>
<tr>
<td id="one" >long-sentance, long-sentance-long-sentance</td>
<td id="two">long-sentance, long-sentance-long-sentance</td>
</tr>
</table>


Reference : pikasoftware