The fraction of incident light or radiation reflected by a surface or body, commonly expressed as a percentage.
The whitish inner portion of the rind of citrus fruits that is a source of pectin, commonly referred to as the pith.
One of the four major stages of the magnum opus, involving purification of the prima materia.
The relative darkness or lightness of a color in (a specific area of) a painting etc.
The degree of importance given to something.
The valuable ingredients to be obtained by treating a mass or compound; specifically, the precious metals contained in rock, gravel, etc.
The relative duration of a musical note.
That which is valued or highly esteemed, such as one's morals, morality, or belief system.
The amount (of money or goods or services) that is considered to be a fair equivalent for something else.
The quality (positive or negative) that renders something desirable or valuable.
Any definite numerical quantity or other mathematical object, determined by being measured, computed, or otherwise defined.
Precise meaning; import.
To regard highly; think much of; place importance upon.
To fix or determine the value of; assign a value to, as of jewelry or art work.
To estimate the value of; judge the worth of something.
To hold dear.