Definition of tonus in English:

tonus

noun ˈtəʊnəsˈtoʊnəs

mass noun

The constant low-level activity of a body tissue, especially muscle tone.
（身体组织，尤指肌肉）痉挛，紧张
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:

tonus

nounˈtoʊnəsˈtōnəs

The constant low-level activity of a body tissue, especially muscle tone.
（身体组织，尤指肌肉）痉挛，紧张
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’.

单词	tonus
释义	Definition of tonus in English: tonus noun ˈtəʊnəsˈtoʊnəs mass noun The constant low-level activity of a body tissue, especially muscle tone. （身体组织，尤指肌肉）痉挛，紧张 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: tonus nounˈtoʊnəsˈtōnəs The constant low-level activity of a body tissue, especially muscle tone. （身体组织，尤指肌肉）痉挛，紧张 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’.
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