The period in the cardiac cycle when the semilunar valves are open and blood is ejected from the ventricles into the arterial system.ejection period sphygmic period
Continually vs. ContinuouslyToday we’re going to explore the meanings and uses of the adverbs continually and continuously. These terms, along with their adjective forms continual and continuous, are often used interchangeably in speech and writing, but style guides urge writers to practice discernment when using continually and continuously. In formal contexts, continually should be used to mean “very often; at regular or frequent intervals,” and continuously to …
What’s The Difference Between “A While” And “Awhile”What are the difference between a while and awhile? Few word pairs capture the idiosyncrasies (“peculiar characteristics”) of the English language like a while and awhile do. Both of these terms are expressions of time, but one is written with a space while the other is one word. These two terms represent different parts of speech. The two-word expression a while is a noun phrase, consisting of the article a and …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.