1. A property which is not essential; a nonessential; anything happening accidentally. He conceived it just that accidentals . . . should sink with the substance of the accusation. Fuller.

2. pl. (Paint.)

Defn: Those fortuitous effects produced by luminous rays falling on certain objects so that some parts stand forth in abnormal brightness and other parts are cast into a deep shadow.

3. (Mus.)

Defn: A sharp, flat, or natural, occurring not at the commencement of a piece of music as the signature, but before a particular note.

ACCIDENTALISM
Ac`ci*den"tal*ism, n.

Defn: Accidental character or effect. Ruskin.

ACCIDENTALITY
Ac`ci*den*tal"i*ty, n.

Defn: The quality of being accidental; accidentalness. [R.]
Coleridge.

ACCIDENTALLY
Ac`ci*den"tal*ly, adv.