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Spongiole

Webster's Dictionary 1913

Spon″gi‐ole (spŭn″jĭ‐ōl; 277), n. [L. spongiola a rose gall, small roots, dim. of spongia: cf. F. spongiole.] (Bot.) A supposed spongelike expansion of the tip of a rootlet for absorbing water; — called also spongelet.