Where does “lunar caustic” come from?

lunar caustic (English) comes from English lunar, from Middle English lunar, from Latin lunaris, from Norman leune, from Old French lune, from Latin lūna, from Old Latin losna, from Proto-Italic louksnā — bright; to shine; to see.

lunar caustic (English): Silver nitrate fused into a stick and used for cauterizing and as a disinfectant before modern antibiotics

Definitions

  1. Silver nitrate fused into a stick and used for cauterizing and as a disinfectant before modern antibiotics

Ancestry of “lunar caustic”, step by step

lunar caustic traces back through two separate lines of ancestry.

via English lunar

StepLanguageWordMeaning
1EnglishlunarOf, pertaining to, or resembling the Moon (that is, Luna, the Earth's moon)
2Middle Englishlunarshaped like the crescent moon
3LatinlunarisOf or pertaining to the moon, lunar
4Normanleunemoon; jellyfish
5Old Frenchlunethe Moon
6Latinlūna
7Old Latinlosna
8Proto-Italiclouksnāmoon
9Proto-Indo-Europeanlówksneh₂moon
10Proto-Indo-Europeanlewḱ-lynx
11Proto-Indo-Europeanlewk-bright; to shine; to see

via English caustic

StepLanguageWordMeaning
1EnglishcausticCapable of burning, corroding or destroying...
2Italiancausticocaustic; scathing
3Latincausticusburning
4Ancient Greekκαυστικόςburning
5Ancient Greek-ικόςof or pertaining to, in the manner of; -ic
6Ancient Greek-κόςforms adjectives with the sense of 'of or...
7Proto-Indo-European-ḱos-y, -ic
Every word from Proto-Indo-European lewk-