metrometer

English

Etymology

From metro- +‎ -meter.

Noun

metrometer (plural metrometers)

(medicine) An instrument for measuring the size of the womb.

References

Edward H[enry] Knight (1877) “Metrometer”, in Knight’s American Mechanical Dictionary. […], volumes II (GAS–REA), New York, N.Y.: Hurd and Houghton […], →OCLC.
“metrometer”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.