testudinousadj.
Etymology: formed as testudinian adj. + -ous suffix.Previous versions of the OED give the stress as: teˈstudinous.
rare. Apparently only attested in dictionaries or glossaries.
1692 (new ed.) Testudinous, belonging to or like a Testudo.
This entry has not yet been fully updated (first published 1911; most recently modified version published online June 2021).