actinometric

from WordNet (r) 3.0 (2006)

actinometric
    adj 1: of or related to actinometry [syn: {actinometric},
           {actinometrical}]

from The Collaborative International Dictionary of English v.0.48

Actinometric \Ac`ti*no*met"ric\, a.
   Pertaining to the measurement of the intensity of the solar
   rays, either (a) heating, or (b) actinic.
   [1913 Webster]