1. (n.) The act of making denser or smaller; as condensation into water droplets; condensation of a book\.

2. (n.) The act or process of reducing, by depression of temperature or increase of pressure, etc., to another and denser form, as gas to the condition of a liquid or steam to water.

3. (n.) A rearrangement or concentration of the different constituents of one or more substances into a distinct and definite compound of greater complexity and molecular weight, often resulting in an increase of density, as the condensation of oxygen into ozone, or of acetone into mesitylene.

abbreviation abbreviature abrege abridgment abstract accelerando acceleration accretion adherence adhesion agglomeration agglutination aggravation apocope astriction astringency beefing-up blowing up blowup bottleneck breviary brief capsule cervix circumscription cling clinging clotting clumping clustering coagulation coarctation coherence cohesion cohesiveness compactedness compaction compend compression compressure concentration concretion condensed version congealment congelation conglobation conglomeration consolidation conspectus constriction constringency contraction contracture curtailment decrease deepening densification digest diminuendo distillation draft dribble drip dripping drop elision ellipsis enhancement epitome exacerbation exaggeration explosion foreshortening hardening head heating-up heightening hourglass hourglass figure information explosion inseparability intensification isthmus junction knitting leaching lixiviation magnification narrow place narrowing neck outline overview pandect percolation pickup population explosion precis puckering pursing recap recapitulation redoubling reduction reinforcement retrenchment review rubric seepage seeping set shortened version shortening skeleton sketch solidification speedup spurtle step-up sticking stranglement strangulation strengthening striction stricture summary summation survey sweating syllabus syncope synopsis systole telescoping thumbnail sketch tightening topical outline trickle tricklet truncation wasp waist wrinkling