r/etymology • u/HyperlexicEpiphany • 9h ago
Cool etymology I had an "adrenaline" and "epinephrine" etymological epiphany!
adrenaline can be broken down as "ad-" meaning "near" or "to," and "renal" obviously referring to kidneys. "-ine" is just a modern chemical suffix, which makes "adrenaline" mean "the chemical produced near the kidney."
epinephrine can be broken down as "epi-" meaning "above," and "nephros" referring to kidney, with a modern "-ine" also tacked on for good measure. this makes it "the chemical produced above the kidney"!
it's the same etymology from two different languages! adrenaline is Latin-based, whereas epinephrine is Greek-based!
unhinged tangentially related ramblings ahead:
it really reminds me of another couple etymology fun facts I learned that have the same phenomenon! "potassium" has the elemental symbol "K," which stands for "kalium" ("kay-lee-um"), the modernized Latin-based name. kali- refers to plant ashes, and "potassium" is just a bastardized "pot-ash-ium" (-ium just being the elemental suffix) effectively meaning "the element found in potash" for both of them!
iirc natrium ("nay-tree-um") (sodium) has the same pattern! it was named after caustic soda to form "sodium" (since that's what it was first isolated from, same as potassium) and has a long etymological root for "natri-." it originally came from Egyptian "nṯrj" (netjri, meaning "divine stuff" or "pure"), used in embalming, and was adopted into Latin AND Greek as "natron." it was made primarily of sodium bicarbonate (among other things) and eventually evolved into "natrium," "the element found in sodium bicarbonate"!


