Defn: The thin-walled summer spore which is produced during the so- called Uredo stage of certain rusts. See (in the Supplement) Uredinales, Heteroecious, etc.
UREIDE
U"re*ide, n. (Chem.)
Defn: Any one of the many complex derivatives of urea; thus, hydantoin, and, in an extended dense, guanidine, caffeine, et., are ureides. [Written also ureid.]
-URET -u*ret.
Defn: A suffix with the same meaning as -ide. See -ide. [Obs.]
URETER
U*re"ter, n. Etym: [NL., fr. Gr. Urine.] (Anat.)
Defn: The duct which conveys the urine from the kidney to the bladder or cloaca. There are two ureters, one for each kidney.
URETERITIS
U*re`ter*i"tis, n. Etym: [NL. See Ureter, and -itis.] (Med.)
Defn: Inflammation of the ureter. Dunglison.
URETHANE
U*reth"ane, n. (Chem.)