Answer: octo

AnswerCrossword Clue
OCTO

Eight, in combinations

OCTO

Plex or meter starter

OCTO

Starter meaning "8"

OCTO
Duo cubed
OCTO
Not quite nona-
OCTOTwice tetra-
OCTOPrefix for pod
OCTOTetra- doubled
OCTOEight: Prefix
OCTOPod opening?
OCTOSepti- plus one
OCTOPi beginning?
OCTOPrefix with centenary
OCTONumerical prefix
OCTOPrefix with -genarian
OCTOPrefix with -pus
OCTOTwice quadri-
OCTOEnnea- minus one
OCTOHalf hexadeca-
OCTOPi opening?
OCTOQuadri- doubled
OCTOPrefix with mom, coined after historic 2009 births
OCTOBi- cubed
OCTOTwo-thirds of dodeca-
OCTOEight, to Caesar
OCTOPrefix for eight
OCTOPrefix with genarian
OCTOPrefix meaning "eight"
OCTOPrefix with pod
OCTOBi times four
OCTOEight (prefix)
OCTOBi- times four
OCTOEight, for a start
OCTOTwo times tetra-
OCTOTabloid prefix with mom
OCTOPrefix before "mom" in tabloids or "dad" in indie videogames
OCTOPi preceder?
OCTOPrefix with -syllabic
OCTOFour times duo
OCTOEight: Lat.