For example, a pitching moment is a vertical force applied at a distance forward or aft from the center of gravity of the aircraft, causing the aircraft to pitch up or down. Roll, pitch and yaw refer, in this context, to rotations about the respective axes starting from a defined equilibrium state. The equilibrium roll angle is known as wings level or zero bank angle, equivalent to a level heeling angle on a ship.
Definition. There are two types of modifiers in the English language: the adjective and the adverb. They have distinctly different roles, and we will examine each, in turn. First, let's look at the definition of each word. An adjective describes, or modifies a noun--a person, place, thing, or idea.
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia. Related to modifier: dangling modifier, misplaced modifier. Modifiers are, quite simply, any word or group of words that modifies (describes or elaborates upon) another element in a sentence. Modifiers can either be adjectives, which modify nouns (or sometimes pronouns), or adverbs, which modify pretty much everything else (usually verbs, adjectives, and other adverbs). Whether a modifier is an adjective or adverb depends on what it modifies and how it functions in a sentence.