This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Of, relating to, or consisting of spondees.

adj. Having or relating to spondees.

adj. Of or pertaining to a spondee; consisting of spondees.

adj. Containing spondees in excess; marked by spondees.

In ancient prosody: Of or pertaining to a spondee; constituting a spondee; consisting of spondees.

Having a spondee in the fifth place: noting a dactylic hexameter of the exceptional form the fifth foot being regularly a dactyl.

adj. of or consisting of spondees

"But the beauty of the descriptions in _Evangeline_ and the pathos -- somewhat too drawn out -- of the story made it dear to a multitude of readers who cared nothing about the technical disputes of Poe and other critics as to whether or not Longfellow's lines were sufficiently "spondaic" to represent truthfully the quantitative hexameters of Homer and Vergil."

spondaical   

forty-five    dactylic    poetic    ultradian    fundamental