Where does “portholing” come from?

portholing (English) comes from English porthole, from English Port, from English portfolio, from Italian portafoglio, from Italian foglio, from Latin folium, from Proto-Italic *foljom, from Proto-Indo-European bʰolh₃yom.

portholing (English): A circular vignette-like defect where the image fades at the borders

Definitions

  1. A circular vignette-like defect where the image fades at the borders

Ancestry of “portholing”, step by step

portholing traces back through two separate lines of ancestry.

via English porthole

StepLanguageWordMeaning
1EnglishportholeA gunport; an opening in the hull of a ship...
2EnglishPortUniversity of Portsmouth, used especially following post-nominal letters indicating status as a graduate
3EnglishportfolioA case for carrying papers, drawings,...
4Italianportafogliowallet, billfold; portfolio
5Italianfogliosheet
6Latinfoliuma leaf; a petal; a sheet or leaf of paper
7Proto-Italic*foljom
8Proto-Indo-Europeanbʰolh₃yomleaf
9Proto-Indo-Europeanbʰleh₃-bloom, flower
10Proto-Indo-Europeanbʰel-to sound; to speak, roar, bark; shiny, white; to...
11Proto-Indo-Europeanbʰōl-

via English ing

StepLanguageWordMeaning
1EnglishingA meadow, especially a low meadow near a river;...
2Middle Englishing
3Old Englishingmeadow, water meadow, ing
4Old Norseengmeadow
5Proto-GermanicangijōA low lying meadow in a valley or near a river
6Proto-Indo-Europeanh₂énkoscurve, bend
7Proto-Indo-European-osCreates action nouns or result nouns from verbs;...
Every word from Proto-Indo-European bʰōl-Every word from Proto-Indo-European bʰel-Every word from Proto-Indo-European bʰleh₃-