Limitation field
From Tardis Wiki, the free Doctor Who reference
The limitation field was a device used by the Abzorbaloff to keep its absorption abilities under control; without it, the Abzorbaloff would break apart and be absorbed by the ground. The field's generator was concealed within Victor Kennedy's Abzorbaloff's cane and was destroyed when Elton Pope broke the cane in half. (TV: Love & Monsters) Historians who had been allowed access to the "Monster Vaults" of the databanks in the Doctor's TARDIS observed that the limitation field, which was artificially generated, was required to prevent an Abzorbaloff's highly unstable body from reverting to a liquiform state. (PROSE: The Monster Vault)
