Where does “fadometer” come from?

fadometer (English) comes from English fade, from Middle English fade, from Middle Dutch vade, from Old French fade, from Vulgar Latin fatidus, from Latin fatuus, from Latin fātus, from Latin for — to speak, to be talking.

fadometer (English): A device that irradiates materials in order to test the degree to which they fade from exposure to sunlight

Definitions

  1. A device that irradiates materials in order to test the degree to which they fade from exposure to sunlight

Ancestry of “fadometer”, step by step

fadometer traces back through two separate lines of ancestry.

via English fade

StepLanguageWordMeaning
1EnglishfadeWeak; insipid; tasteless
2Middle Englishfade
3Middle Dutchvadeweak, faint, limp
4Old Frenchfadeweak, witless
5Vulgar Latinfatidus
6Latinfatuusfoolish, silly, simple; stupid; insipid,...
7Latinfātusspoken, said, told, foretold, related, predicted; having or had spoken, etc
8Latinfor"defective"; I speak, talk, say
9Proto-Italicfāōrspeak
10Proto-Indo-Europeanbʰéh₂tito speak, to be talking

via English ometer

StepLanguageWordMeaning
1EnglishometerA measuring instrument
2English-ometerAlternative form of -meter
3English-meterUsed to form the names of measuring devices
4Frenchmètremetre/meter; first-person singular present...
5Latinmetruma measure
6Ancient Greekμέτρονsomething used to measure: measure, rule, weight;...
7Ancient Greek-τρονForms instrument nouns
8Proto-Hellenic-tronForms instrument nouns from verb stems
9Proto-Indo-European-tromForms nouns denoting a tool or instrument
10Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...
Every word from Proto-Indo-European bʰéh₂ti