quadri-, quadra-, quad-, quadru-
(Latin: four)
quadrupedal
1. Of animals, four-footed; using all four feet for walking or running.
2. Sometimes a reference to a person: on hands and knees.
quadruple
quadruplet
quadruplets
quadruplex
quadruplicate
quadruplication
quadruplicity
quadruply
quarantine
quarry (stones, rocks)
sesquiquadrate
Aspect of two heavenly bodies when separated by one and a half quadrants (135 degrees).
squad
squadron
square
Cross references of word families that are related, partially or totally, to: "four, fourth":
quatr-;
tessara-;
tetra-.