(n.) Act of solidifying, or state of being solidified.

Anschluss abbreviation accretion addition adherence adhesion affiliation agglomeration agglutination aggregation agreement alliance amalgamation arteriosclerosis assimilation association astriction astringency atherosclerosis blend blending bottleneck cabal calcification callusing cartel case hardening centralization cervix circumscription cling clinging clotting clumping clustering coagulation coalescence coalition coarctation coherence cohesion cohesiveness combination combine combo compactedness compaction composition compression compressure concentration concretion condensation confederacy confederation congealment congelation congeries conglobation conglomeration conjugation conjunction consolidation conspiracy constriction constringency contraction contracture cornification crystallization curtailment decrease densification diminuendo ecumenism embodiment encompassment enosis federalization federation firming fossilization fusion granulation hardening hookup hornification hourglass hourglass figure identity inclusion incorporation individuality indivisibility induration inseparability intactness integrality integration integrity inviolability irreducibility isthmus junction junta knitting lapidification league lithification marriage meld melding merger narrow place narrowing neck oneness organic unity ossification package package deal particularity petrifaction petrification puckering purity pursing reduction sclerosis selfsameness set setting shortening simplicity singleness singularity solidarity solidity steeling sticking stiffening stranglement strangulation striction stricture syncretism syndication syneresis synthesis systole tempering tie-up toughening undividedness unification uniformity union uniqueness unity univocity vitrifaction vitrification wasp waist wedding wholeness wrinkling