[1] : The Collaborative International Dictionary of English v.0.48

quinquagesima \quin`quages"ima\, a. l., fr. quinquagesimus
   the fiftieth, akin to quinquaginta fifty, quinque five. see
   five.
   fiftieth.
   1913 webster

   quinquagesima sunday, the sunday which is the fiftieth day
      before easter, both days being included in the reckoning;
      -- called also shrove sunday.
      1913 webster
see also:
five quinquagesima sunday shrove sunday 

[2] : WordNet (r) 2.0

quinquagesima
     n : the sunday before ash wednesday the beginning of lent
         syn: quinquagesima sunday
see also:
quinquagesima sunday 

Quinquagesima >> Q Words
Quinquagesima, definition of term: Quinquagesima
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