filopodium

noun

fil·​o·​po·​di·​um

ˌfil-ə-ˈpō-dē-əm also ˌfīl-

variants also filopod

ˈfil-ə-ˌpäd 

plural filopodia -ˈpō-dē-ə  also filopods

: a long thin filamentous pseudopodium (as of a nerve cell or platelet)

filopodial

-ˈpō-dē-əl 

adjective