rayometer
/reɪˈɒmɪtə/rare. Now disused
noun
Any of several instruments used in the measurement of radiant energy or light.
Origin
Late 19th century. From ray + -ometer.
- predistinguished
- predivine
- Predmost
- Predmostian
- prednisolone
- prednisone
- predoctoral
- predominance
- predominancy
- predominant
- predominantly
- predominant partner
- predominate
- predominately
- predomination
- predominator
- predominion
- predone
- predoom
- predormital
- predorsal
- Pre-Dorset
- pre-Dreadnought
- pre-drill
- pre-drilling