(linguistics) a unit of language that can only be used as part of a word, not as a word on its own (such as the English suffix -ly).

(idiomatic) A return to a former state of success or brilliance.

(idiomatic) To go back to a better, original state.

plural of printing form

(mathematics) A form (expression) that does not use limits, implicitly or explicitly. / (mathematics) A differential form whose exterior derivative is zero.

plural of thought-form

Any of a set of presuppositions or fundamental ideas which define the thinking of people of a given region, time period etc.

(calculus) a covector field

plural of collateral form

(logic) Alternative form of argument form