stethometer
noun
ste·thom·e·ter
-mətə-
: an apparatus for measuring the expansion of the chest wall during respiration
stethometric adjective
¦stethə¦me‧trik
stethometry noun
stə̇ˈthämətrē
steˈ-
plural -es
Word History
Etymology
International Scientific Vocabulary steth- + -meter