Webster’s Revised Unabridged Dictionary · 1913
Stichidium
Sti·chid′i·um (stĭ·kĭd′ĭ·ŭm), n.; pl. Stichida (#). [NL., fr. Gr. στιχίδιον, dim. of στίχος a row.] (Bot.) A special podlike or fusiform branch containing tetraspores. It is found in certain red algæ.