collision

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on a collision course

Of a person, group, or object, on a certain path to conflict, collision, destruction, or ruin with someone or something else. The radical left-wing coalition is set to be on a collision course with the majority conservative government this January. Little did the passengers know that they were riding a train on a collision course with disaster.
See also: collision, course, on

be on a collision course

Of a person, group, or object, to be on a certain path to conflict, collision, destruction, or ruin with someone or something else. The radical coalition is set to be on a collision course with the majority government this year. Little did the passengers know that their train was on a collision course with disaster.
See also: collision, course, on

on a collision course

adopting an approach that is certain to lead to conflict with another person or group.
This phrase is also used literally to mean ‘going in a direction that will lead to a violent crash with another moving object or person’.
See also: collision, course, on

be on a colˈlision course (with somebody/something)


1 be in a situation which is almost certain to cause a disagreement or dispute: I was on a collision course with my boss over the sales figures.
2 be moving in a direction in which it is likely that you will crash into somebody/something: The ship was on a collision course with a huge iceberg.
See also: collision, course, on
References in periodicals archive ?
Normally the OIII emission comes from collisionally excited lines of oxygen and the reasons for no OIII emission in this case could be either a low temperature central star that is not emitting enough high energy photons to excite the nebula, or a high density nebula where the energy levels that produce the OIII lines are getting collisionally de-excited before they have a chance to emit the photons, a process called damping.
The Japan Aero space Exploration Agency's (JAXA) Hayabusa spacecraft revealed this near-Earth asteroid to be a classic example of a rubble pile, an aggregate of collisionally disrupted blocks of rock barely held together by gravity (S&T: September 2006, page 34).
The ions comprising this peak are made to undergo further fragmentation, usually by the method known as collisionally induced dissociation (CID) The ions are allowed to interact, and collide with atoms or molecules of an inert gas (helium, neon, argon, or nitrogen).
Researchers can now conduct rapid, alternating collisionally induced dissociation (CID) and ETD scanning throughout the LC-MSn analysis of complex samples.
However, the levels with higher n-values stay in detailed balance relative to each other at these atmospheric depths, and they also collisionally couple tightly to the continuum" [64].
Available for the first time on a linear ion trap mass spectrometer, ETD provides important new peptide structural information not available from conventional collisionally induced dissociation (CID) methods.