crossover

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

• noun A place at which or the means by which a crossing is made.
• noun A short connecting track by which a train can be transferred from one line to another.
• noun Genetics Crossing over.
• noun A registered member of one political party who votes in the primary of the other party.
• noun The adaptation of a musical style, as by blending elements of two or more styles or categories, to appeal to a wider audience.
• noun One, such as a performer, song, or movie, that appeals to more than one segment of an audience or market.

from The Century Dictionary.

• noun In railroading, a crossing or connecting line of rails and two switches joining two lines of rails. It is used to enable a train to cross from one line to another. See switch, 2, and *ladder, 3.
• noun In electricity, a place where two wires pass each other without touching. Should they touch a cross would be formed. See cross, 13.
• noun Same as sontag.
• noun The crossing of the swiftest current in a river from one side of the channel to the other. Crossovers generally occur between two bends in the course of a stream.
• noun In calico-printing, a superimposed color in the form of stripes, bands, or cross-bars.

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

• noun (genetics) the interchange of sections between pairing homologous chromosomes during the prophase of meiosis.
• noun a structure, such as a bridge, bearing a path for crossing over a river or highway.
• noun votes from members of one political party cast for candidates of another party; -- called also crossover vote.
• noun a member of one political party who votes for a candidate of another party; -- called also crossover voter.
• noun (Plumbing) a U-shaped section of pipe which serves to pass one pipeline over another which is directly in its path.

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

• noun A place where one thing crosses over another.
• noun The means by which the crossing is made.
• noun genetics the result of the exchange of genetic material during meiosis.
• noun A blend of multiple styles of music, intended to appeal to a wider audience.
• noun An automobile that is a mix of two kinds of automobiles, i.e. the Pontiac Torrent.
• noun rail transport A pair of switches and a short, diagonal length of track which together connect two parallel tracks and allow passage between them.
• noun A piece of fiction that borrows elements from two or more fictional universes.

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

• noun the interchange of sections between pairing homologous chromosomes during the prophase of meiosis
• noun the appropriation of a new style (especially in popular music) by combining elements of different genres in order to appeal to a wider audience
• noun a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other
• noun a voter who is registered as a member of one political party but who votes in the primary of another party