Webster's Revised Unabridged Dictionary · 1913

Quinquagesima

Quinquagesima , adjective

[Latin, from quinquagesimus the fiftieth, akin to quinquaginta fifty, quinque five. See Five.]

Fiftieth.
Collocations (1)
Quinquagesima Sunday , the Sunday which is the fiftieth day before Easter, both days being included in the reckoning; -- called also Shrove Sunday.