- testudoA shelter formed by a body of troops holding their shields or targets close together over their heads.
- testudinalOf, or relating to, tortoises.
- testudinariousResembling or pertaining to the shell of a tortoise.
- testudinateOf, like or relating to a tortoise.
- testudineousCharacteristic of a tortoise, or the shell of a tortoise.
- testudinidAny member of the Testudinidae, the tortoises.
- testudinoidAny turtle of the superfamily Testudinoidea.