$re = '/;([^;]*?)WORD/';
$str = '1. (XYZTRR: KTTT 4.0.1; TVS A3003 WORD/LLLLL ; pj ;)
2. (XcdcdRR: dTff 5.4.1; TVS A3003 WORD/UJHKKKHH fpp)
3. (LLLhf22; 776332 8.7.1; TVS A3003 WORD/UHHGFVV phhp) ';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php