- concretion - the formation of stonelike objects within a body organ (e.g., the kidneys)
--1 is a kind of natural process, natural action, action, activity
- calculus, concretion - a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body; "renal calculi can be very painful"
--2 is a kind of rock, stone
--2 has particulars:bladder stone, cystolith; enterolith; gallstone, bilestone; kidney stone, urinary calculus, nephrolith, renal calculus; ptyalith; sialolith, salivary calculus; urolith - compaction, compression, concretion, densification - an increase in the density of something
--3 is a kind of concentration
Derived form: verb concrete2 - coalescence, coalescency, coalition, concretion, conglutination - the union of diverse things into one body or form or group; the growing together of parts
--4 is a kind of union, unification, uniting, conjugation, jointure
Derived form: verb concrete2 - calculus, concretion - a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body; "renal calculi can be very painful"