the interchange of sections between pairing homologous chromosomes during the prophase of meiosis
"During prophase I of meiosis, a crossover occurs when genetic material is exchanged between paired homologous chromosomes."
a voter who is registered as a member of one political party but who votes in the primary of another party
"After registering as a Democrat, Sarah decided to crossover and vote in the Republican primary."
the appropriation of a new style (especially in popular music) by combining elements of different genres in order to appeal to a wider audience
"a jazz-classical crossover album"
A place where one thing crosses over another.
"The road's narrowest point is a physical crossover where the main highway intersects with the service drive."
In plain English: A crossover is when something moves from its usual group to become popular with people outside that group.
"The new movie was designed to appeal to both teenagers and adults, making it a true crossover hit."
Usage: As a noun, crossover refers specifically to an intersection or point of transition between two distinct paths, groups, or categories rather than a general crossing event. Use this term when describing physical road junctions or metaphorical shifts in genres and demographics instead of the more generic "crossing."
Configured so that the transmit signals at one end are connected to the receive signals at the other.
"The network engineer installed a crossover cable to connect the two computers directly without using a hub."
In plain English: Crossover describes something that brings together two different groups, styles, or ideas into one mix.
"The crossover episode brought together fans from both popular series."
The word crossover comes directly from the phrase cross over. It entered English as a standard verb-noun combination without any change to its original meaning of moving across something.