Definition that contains psid
- flip turn upside down, or throw so as to reverse
- reverse turn inside out or upside down
- lobster any of several edible marine crustaceans of the families Homaridae and Nephropsidae and Palinuridae
- handstand the act of supporting yourself by your hands alone in an upside down position
- inversion turning upside down; setting on end
- invert turn inside out or upside down
- hepatic any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses
- liverwort any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses
- genus peripatopsis type genus of Peripatopsidae; onychophorans of chiefly Asiatic and African tropical regions
- dicynodont a kind of therapsid