v. t. - To make thin or slender, as by mechanical or chemical action upon inanimate objects, or by the effects of starvation, disease, etc., upon living bodies.
v. t. - To make thin or less consistent; to render less viscid or dense; to rarefy. Specifically: To subtilize, as the humors of the body, or to break them into finer parts.
v. t. - To lessen the amount, force, or value of; to make less complex; to weaken.
v. i. - To become thin, slender, or fine; to grow less; to lessen.
a. - Alt. of Attenuated