so·lar·im·e·ter 
(sō′lə-rĭmĭ-tər)
(sō′lə-rĭmĭ-tər)n.
An instrument used to measure the flux of solar radiation through a surface.
- interpretively
- interpupillary
- interracial
- interregional
- interregnal
- interregnum
- interrelate
- interrelatedness
- interrelationship
- interreligious
- interrobang
- interrog.
- interrogate
- interrogation
- interrogational
- interrogation point
- interrogative
- interrogatively
- interrogator
- interrogatorily
- interrogatory
- interrupt
- interrupter
- interruptible
- interruption