Metemptosis

• (n.) The suppression of a day in the calendar to prevent the date of the new moon being set a day too late, or the suppression of the bissextile day once in 134 years. The opposite to this is the proemptosis, or the addition of a day every 330 years, and another every 2,400 years.
Found on http://thinkexist.com/dictionary/meaning/metemptosis/

Metemptosis

Met`emp·to'sis noun [ New Latin , from Greek ... beyond, after + ... a falling upon, from ... to fall in or upon; ... in + ... to fall.] (Chron.) The suppression of a day in the calendar to prevent the date of the new moon being set a day too late, or the suppression of the bissextile day once in 1...
Found on http://www.encyclo.co.uk/webster/M/57

metemptosis

metemptosis The suppression of a day in the calendar to prevent the date of the new moon being set a day too late, or the suppression of the bissextile day once in 134 years. The opposite to this is the proemptosis, or the addition of a day every 330 years, and another every 2,400 years. From Greek, 'after' and 'to fall'.
Found on http://www.wordinfo.info/words/index/info/view_unit/1785/

metemptosis

omission of day from calendar to correct lunar calendar
Found on http://phrontistery.info/m.html
No exact match found