Meaning of CONCRETION in English
n. 1 a a hard solid concreted mass. b the forming of this by coalescence. 2 Med. a stony mass formed within the body. 3 Geol. a small round mass of rock particles embedded in limestone or clay. concretionary adj.
[ F f. L concretio (as concrete) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012