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prostal

noun
pros·​tal | \ ˈprästᵊl\
plural -s

Definition of prostal

: a spicule that projects beyond the body of a living sponge

History and Etymology for prostal

New Latin prostalia (plural) prostals, from pro- entry 1 + -stalia (from Latin stare to stand + -alia, neuter plural of -alis -al)

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