condense

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To make more dense or compact.
• intransitive verb To concentrate (a substance), especially by removing water.
• intransitive verb To make more concise; abridge or shorten.
• intransitive verb To cause (a gas or vapor) to change to a liquid.
• intransitive verb To become more dense or compact.
• intransitive verb To undergo condensation.

from The Century Dictionary.

• Close in texture or composition; compact; dense.
• To make more dense or compact; reduce the volume or compass of; bring into closer union of parts; consolidate; compress: used both literally and figuratively.
• In chem. and physical, to reduce to another and denser form, as a gas or vapor to the condition of a liquid or of a solid, as by pressure or abstraction of heat.
• Synonyms To concentrate, contract, crowd together, inspissate; to abridge, shorten, reduce, epitomize, abbreviate; to solidify.
• To become denser or more compact, as the particles of a body; become liquid or solid, as a gas or vapor.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To become more compact; to be reduced into a denser form.
• intransitive verb To combine or unite (as two chemical substances) with or without separation of some unimportant side products.
• intransitive verb To undergo polymerization.
• transitive verb To make more close, compact, or dense; to compress or concentrate into a smaller compass; to consolidate; to abridge; to epitomize.
• transitive verb (Chem. & Physics) To reduce into another and denser form, as by cold or pressure.
• transitive verb milk reduced to the consistence of very thick cream by evaporation (usually with addition of sugar) for preservation and transportation.
• transitive verb a steam engine in which the steam is condensed after having exerted its force on the piston.
• adjective rare Condensed; compact; dense.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb transitive To decrease size or volume by concentration toward the essence.
• verb intransitive, chemistry To transform from a gaseous state into a liquid state via condensation.
• adjective archaic Condensed; compact; dense.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb undergo condensation; change from a gaseous to a liquid state and fall in drops
• verb remove water from
• verb cause a gas or vapor to change into a liquid
• verb make more concise
• verb become more compact or concentrated
• verb develop due to condensation
• verb compress or concentrate