Where does “antijam” come from?

antijam (English) comes from English JAM, from Urdu جامہ, from Persian جامه, from Middle Persian yʾmk', from Proto-Iranian *yām-, from Proto-Indo-Iranian Yámas, from Proto-Indo-European *yém-o-s.

antijam (English): Preventing jamming

Definitions

  1. Preventing jamming

Ancestry of “antijam”, step by step

antijam traces back through two separate lines of ancestry.

via English JAM

StepLanguageWordMeaning
1EnglishJAMA household that is only barely able to meet its...
2Urduجامہgarment; robe; gown
3Persianجامهa garment, robe, vest, gown, coat
4Middle Persianyʾmk'—
5Proto-Iranian*yām-—
6Proto-Indo-IranianYámas—
7Proto-Indo-European*yém-o-s—

via English anti

StepLanguageWordMeaning
1EnglishantiOpposed to something; That has a torsion angle...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Proto-Indo-European *yém-o-s →
antijam — Etymology, Origin & Word History | Etymology Explorer