Accident, n.
Etymology: [F. accident, fr. L. accidens, -dentis, p. pr. of accidere to happen; ad + cadere to fall. See Cadence, Case.]
1. Literally, a befalling; an event that takes place without one's foresight or expectation; an undesigned, sudden, and unexpected event; chance; contingency; often, an undesigned and unforeseen occurrence of an afflictive or unfortunate character; a casualty; a mishap; as, to die by an accident. Of moving accidents by flood and field. Shak. Thou cam'st not to thy place by accident: It is the very place God meant for thee. Trench.
2. (Gram.)
A property attached to a word, but not essential to it, as gender, number, case.
3. (Her.)
5 more senses
A point or mark which may be retained or omitted in a coat of arms.
4. (Log.) (a) A property or quality of a thing which is not essential to it, as whiteness in paper; an attribute. (b) A quality or attribute in distinction from the substance, as sweetness, softness.
5. Any accidental property, fact, or relation; an accidental or nonessential; as, beauty is an accident. This accident, as I call it, of Athens being situated some miles from the sea. J. P. Mahaffy.
6. Unusual appearance or effect. [Obs.] Chaucer.
Note: Accident, in Law, is equivalent to casus, or such unforeseen, extraordinary, extraneous interference as is out of the range of ordinary calculation.
Shades of meaning
An accident is that which happens without any one's direct intention; a chance that which happens without any known cause. If the direct cause of a railroad accident is known, we can not call it a chance. To the theist there is, in strictness, no chance, all things being by divine causation and control; but chance is spoken of where no special cause is manifest: "By chance there came down a certain priest that way," Luke x, 31. We can speak of a game of chance, but not of a game of accident. An incident is viewed as occurring in the regular course of things, but subordinate to the main purpose, or aside from the main design. Fortune is the result of inscrutable controlling forces. Fortune and chance are nearly equivalent, but chance can be used of human effort and endeavor as fortune can not be; we say "he has a chance of success," or "there is one chance in a thousand," where we could not substitute fortune; as personified, Fortune is regarded as having a fitful purpose, Chance as purposeless; we speak of fickle Fortune, blind Chance; "Fortune favors the brave." The slaughter of men is an incident of battle; unexpected defeat, the fortune of war. Since the unintended is often the undesirable, accident tends to signify some calamity or disaster, unless the contrary is expressed, as when we say a fortunate or happy accident. An adventure is that which may turn out ill, a misadventure that which does turn out ill. A slight disturbing accident is a mishap. Compare event; hazard.
Prepositions
The accident of birth; an accident to the machinery.