Webster’s Revised Unabridged Dictionary · 1913
Teleutospore
Te·leu′to·spore (tē·lū′tō·spōr), n. [Gr. τελευτή completion + E. spore.] (Bot.) The thick-celled winter or resting spore of the rusts (order Uredinales), produced in late summer. See Illust. of Uredospore.