radiometer

Founding-era definition · Webster's 1828 American Dictionary

RADIOM'ETER, noun [Latin radius, rod, and Gr. measure.] The forestaff, an instrument for taking the altitudes of celestial bodies.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI

More founding-era words: liberty · virtue · republic · justice · providence · commerce · militia · arms · prudence · establishment · religion · usurpation · tyranny · citizen · unalienable · sovereign