a conflict of opposed ideas or attitudes or goals; "a collision of interests"
an accident resulting from violent impact of a moving object; "three passengers were killed in the collision"; "the collision of the two ships resulted in a serious oil spill"
(physics) an brief event in which two or more bodies come together; "the collision of the particles resulted in an exchange of energy and a change of direction"
the quality of being significant; "do not underestimate the significance of nuclear power"
a meaning that is not expressly stated but can be inferred; "the significance of his remark became clear only later"; "the expectation was spread both by word and by implication"