Definition of pantotherian in US English:

pantotherian

adjective

  • Of or relating to the extinct mammalian group Pantotheria. Also as noun, a pantothere.

Origin

Late 19th century; earliest use found in The Century Dictionary. From scientific Latin Pantotheria, order name + -an.

Pronunciation

pantotherian

/ˌpantəˈθɪərɪən/