Chromolithographer (n.)
definition: One who is engaged in chromolithography.

Chromolithographer is an 18 letter word that begins with a C and ends in an R

Haematodynamometer (n.)
definition: Same as Hemadynamometer.

Haematodynamometer is an 18 letter word that begins with a H and ends in an R

Maestricht monitor
definition: The Mosasaurus Hofmanni. See Mosasaurus.

Maestricht monitor is an 18 letter word that begins with an M and ends in an R

Maxillo-mandibular (a.)
definition: Pertaining to the maxilla and mandible; as
The maxillo-mandibular nerve.
Maxillo-mandibular is an 18 letter word that begins with an M and ends in an R

Thermoelectrometer (n.)
definition: An instrument for measuring the strength of an electric current in the heat which it produces
Or for determining the heat developed by such a current.
Thermoelectrometer is an 18 letter word that begins with a T and ends in an R

Volta-electrometer (n.)
definition: An instrument for the exact measurement of electric currents.

Volta-electrometer is an 18 letter word that begins with a V and ends in an R

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