Definitions
from The Century Dictionary.
- noun An instrument devised by Dr. John W. Draper (1844) to measure the tithonic or chemical action of light-rays by their effect in causing the chemical union of chlorin and hydrogen. See the quotation.
from the GNU version of the Collaborative International Dictionary of English.
- noun rare An instrument or apparatus for measuring or detecting tithonicity; an actinometer.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An
instrument orapparatus for measuring or detectingtithonicity ; anactinometer .
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