a measure of the velocity of one celestial body in orbit about another, equal to the area swept out per unit time by the vector joining the two bodies.
What Are Irregular Verbs?Verbs (the action words in sentences) are grouped as either regular and irregular, based on whether they follow standard rules of conjugation. Some common irregular verbs include go, have, make, say, take, and know. Regular Verbs To form the past tense of a regular verb, just add -d or -ed to the end of it. For example, learn becomes learned in the past tense. Irregular …
What Are Split Infinitives?Sometimes infinitives need a little space. A split infinitive occurs when there’s an adverb between two parts of an infinitive. An infinitive consists of the word to and the simple form of a verb (e.g. to go and to read). “To suddenly go” and “to quickly read” are examples of split infinitives because the adverbs (suddenly and quickly) split (or break up) the infinitives to …
Origin of areal velocity
First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019