Search Result for "semestrial": 
Wordnet 3.0

ADJECTIVE (1)

1. occurring every six months or during every period of six months;
[syn: semestral, semestrial]



WordNet (r) 3.0 (2006):

semestrial
    adj 1: occurring every six months or during every period of six
           months [syn: semestral, semestrial]