köken: Inherited from Middle French chaisne, from Old French chaene, chaiene, caiene, inherited from Latin catēna. Doublet of cadène and catène. The long vowel derives from the Old French hiatus; by analogy the length was expressed with a silent -s- in Middle French, which was then replaced with the circumflex.
aile: chaîne alimentaire, chaîne de caractères, chaîne de commandement, chaîne de production, chaîne de télévision, chaîne du froid, chaîne latérale, chaîner, chaînette, chaînon
La chaîne est trop courte, nous n'y arriverons pas.
köken: he(i)ti- + -e. Modern sense coined by Finnish physician and philologist Elias Lönnrot in 1859; earlier used in dialects for “inflorescence (of cereals or grasses)”.
köken: From Proto-Italic *stāmen, from Proto-Indo-European *stéh₂mn̥, from *steh₂- (“stand”), whence also stō and sistō. Cognate with Sanskrit स्थामन् (sthā́man, “place; strength”), Gothic 𐍃𐍄𐍉𐌼𐌰 (stōma), Ancient Greek στῆμα (stêma), used by Hesychius for a part of a plant. Equivalent to stō (“to stand”) + -men (noun-forming suffix).