Is it ensure, insure, or assure?
pseudopodium pseu·do·po·di·um (sōō'də-pō'dē-əm)
n. pl. pseu·do·po·di·a (-pō'dē-ə)
temporary or semipermanent extension of the cytoplasm, used in locomotion and feeding by all sarcodine protozoans (i.e., those with pseudopodia; see sarcodine) and some flagellate protozoans. Pseudopodia are formed by some cells of higher animals (e.g., white blood corpuscles) and by amoebas. During amoeboid feeding, pseudopodia either flow around and engulf prey or trap it in a fine, sticky mesh