Noun | 1. | concretion - the formation of stonelike objects within a body organ (e.g., the kidneys) natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity" |
2. | 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" bladder stone, cystolith - a calculus formed in the bladder enterolith - a calculus occurring in the intestines ptyalith - calculus in a salivary gland salivary calculus, sialolith - a stone formed in the salivary gland urolith - a urinary stone | |
3. | ![]() concentration - increase in density | |
4. | concretion - the union of diverse things into one body or form or group; the growing together of parts jointure, uniting, unification, conjugation, union - the act of making or becoming a single unit; "the union of opposing factions"; "he looked forward to the unification of his family for the holidays" |