1. massing or clumping of materials together. 2. a clumped mass of material. familial aggregation the occurrence of more cases of a given disorder in close relatives of a person with the disorder than in control families. platelet aggregation platelet agglutination.
boule â(plural boules). 1  One of the bowls used in the French game of boules. 2  A single-crystal ingot produced by synthetic means. 3  A round loaf of bread. 4  A round piece of dough. ( 5 woodworking) A through-sawn log with the slices restacked in the order and orientation they originally had in the log, usually with waney edges.
bole. [ 1 bÅl] 2  any of a variety of soft, friable clays of various colors, although usually red from iron oxide. They consist of hydrous silicate of aluminum, are used as pigments, and were once commonly used as absorbents and astringents.