n. The act of uniting by glue or other tenacious substance; the state of being thus united; adhesion of parts; that which is united; a mass or group cemented together.n. In philology, the condition of being agglutinate; the process or result of agglutinate combination. See agglutinate, a.n. In Wundt's psychology, the simplest type of apperceptive connection of ideas: a connection in which one is still clearly conscious of the constituent ideas, while the total idea aroused by their conjunction is nevertheless unitary: for example, watch-tower, steamboat.n. In bacteriology, the clumping or coalescence of red blood-corpuscles or bacteria brought about by the action of special agglutinating substances (agglutinins).