Answer: octo

AnswerCrossword Clue
OCTOEight combiner
OCTOPrefix with -pod
OCTOEight, for starters
OCTOArachnid-appropriate prefix
OCTOPiece of eight?
OCTOTetra X 2
OCTOEight start
OCTOOvid's VIII in combos
OCTOPod preceder
OCTOEight: prefix
OCTOTetra x 2
OCTOBi-, quadrupled
OCTOPrefix for "eight"
OCTOPrefix denoting "eight"
OCTOPrefix with "mom" in 2009 news
OCTOSex plus two, to Caesar
OCTOEight, for starters?
OCTOTwice quattuor
OCTOModern prefix with mom
OCTOPrefix with mom
OCTOVIII, to Cicero
OCTONumerical prefix.
OCTONumerical combining form.
OCTOPrefix for pus
OCTOEight: Comb. form
OCTOTetra doubled
OCTOBefore novem
OCTOVIII, to Virgil
OCTODuo quadrupled
OCTOVIII
OCTONumerical prefix with -ber
OCTOCicero's VIII
OCTONumerical combining form
OCTOVIII, to Ovid
OCTOOvid's VIII
OCTOCato's VIII
OCTOEight, to Cato
OCTOQuattuor doubled
OCTOEight, to Ovid
OCTOHalf of sedecim