| 释义 | 
		Definition of tonus in English: tonusnoun ˈtəʊnəsˈtoʊnəs mass nounThe constant low-level activity of a body tissue, especially muscle tone.  increased tonus of the muscles about the eye  Example sentencesExamples -  They also reported a decrease in uterine tonus and an increase in fetal movements.
 -  Since then, I have always remembered the side effects of fentanyl, particularly the increase in sphincter tonus, and all my junior colleagues hear a ‘short lecture’ from me on the subject.
 -  Upper airway patency during sleep is determined, in part, by the tonus of pharyngeal dilator muscles.
 -  Muscle tonus, measured by the EMG, is also often recorded since muscle tonus decreases within sleep.
 -  Also, subjacent vascular smooth muscle cells increase their tonus.
 
 
 Origin   Late 19th century: from Latin, from Greek tonos 'tension'.    Definition of tonus in US English: tonusnounˈtoʊnəsˈtōnəs The constant low-level activity of a body tissue, especially muscle tone.  increased tonus of the muscles about the eye  Example sentencesExamples -  Since then, I have always remembered the side effects of fentanyl, particularly the increase in sphincter tonus, and all my junior colleagues hear a ‘short lecture’ from me on the subject.
 -  They also reported a decrease in uterine tonus and an increase in fetal movements.
 -  Muscle tonus, measured by the EMG, is also often recorded since muscle tonus decreases within sleep.
 -  Upper airway patency during sleep is determined, in part, by the tonus of pharyngeal dilator muscles.
 -  Also, subjacent vascular smooth muscle cells increase their tonus.
 
 
 Origin   Late 19th century: from Latin, from Greek tonos ‘tension’.     |