pinnigrade

[ pin-i-greyd ]

adjective

1. moving by means of finlike parts or flippers, as the seals and walruses.

noun

1. a pinnigrade animal.

pinnigrade

/ pĭn′ĭ-grād′ /

1. Walking by means of finlike organs or flippers, as seals and walruses.

Word History and Origins

Origin of pinnigrade¹

From the New Latin word pinnigradus, dating back to 1840–50. See pinna, -i-, -grade