12-Letter Words Containing: TROM

• the use of spectroscopes to analyze spectra

• spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer

• Both ventral and medial

• A colourless oily liquid used in organic synthesis, and as a fuel for rockets, racing cars and model aircraft

• The simplest nitroparaffin, CH3NO2

• meter to measure electrostatic voltage differences; draws no current from the source

• A mechanical device that measures the ease of penetration of an object into a semisolid

• A device that measures the penetrating power of electromagnetic radiation (especially X-rays)

• allow to enter; grant entry to

• the act of putting one thing into another

• the branch of astronomy that deals with the measurement of the position and motion of celestial bodies