Aristotelian: undeveloped potentiality subject to change and development; formlessness. Matter receives form, and becomes substance.
Matter made up of normal particles, not antiparticles.
An affair, condition, or subject, especially one of concern or (especially when preceded by the) one that is problematic.
The basic structural component of the universe, usually having mass and volume.
An approximate amount or extent.
Printed material, especially in books or magazines.
A kind of substance.
To be important.
To care about, to mind; to find important.
An imperfect and faint representation.
A dark image projected onto a surface where light (or other radiation) is blocked by the shade of an object.
A small degree; a shade.
An influence, especially a pervasive or a negative one.
Relative darkness, especially as caused by the interruption of light; gloom; obscurity.
That which looms as though a shadow.
A area protected by an obstacle (likened to an object blocking out sunlight).
One who secretly or furtively follows another.
An inseparable companion.
A drop shadow effect applied to lettering in word processors etc.
A spirit; a ghost; a shade.
An unconscious aspect of the personality.
A trainee, assigned to work with an experienced officer.
Unofficial, informal, unauthorized, but acting as though it were.
Having power or influence, but not widely known or recognized.
Part of, or related to, the opposition in government.
Acting in a leadership role before being formally recognized.
To accompany (a professional) during the working day, so as to learn about an occupation one intends to take up.
To make (an identifier, usually a variable) inaccessible by declaring another of the same name within the scope of the first.
To hide; to conceal.
To represent faintly and imperfectly.
To shade, cloud, or darken.
To block light or radio transmission from.
To secretly or discreetly track or follow another, to keep under surveillance.
To apply the shadowing process to (the contents of ROM).