Where does “циркуляр” come from?

циркуляр (Russian) comes from English circular, from Middle English circuler, from Old French circulier, from Latin circulāris, from Latin circulus, from Latin -ulus, from Proto-Italic -olos, from Proto-Italic -elos — Forms agent nouns from verbal roots.

циркуляр (Russian): circulaire written directive to subordinates

Definitions

  1. circulaire written directive to subordinates

Ancestry of “циркуляр”, step by step

циркуляр traces back through two separate lines of ancestry.

via English circular

StepLanguageWordMeaning
1EnglishcircularOf or relating to a circle; In the shape of, or...
2Middle Englishcirculer
3Old Frenchcirculier
4Latincirculāriscircular, round
5Latincirculuscircle; An orbit; A ring, hoop
6Latin-ulusUsed to form a diminutive of a noun, indicating...
7Proto-Italic-olos
8Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
9Proto-Indo-European-e-lós
10Proto-Indo-European-lósForms agent nouns from verbal roots

via German Zirkular

StepLanguageWordMeaning
1GermanZirkularcircular
Every word from Proto-Indo-European -lósEvery word from Latin -ulusEvery word from Latin circulus