Where does “đèn lồng” come from?

đèn lồng (Vietnamese) comes from Vietnamese lòng, from Latin longus, from Latin -ē, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

Ancestry of “đèn lồng”, step by step

đèn lồng traces back through 3 separate lines of ancestry.

via Vietnamese lòng

Step	Language	Word	Meaning
1	Vietnamese	lòng	intestines; the central region of a hand or foot;...
2	Latin	longus	far, long; extended, prolonged; long; tedious,...
3	Latin	-ē	ly; used to form adverbs from adjectives
4	Latin	dis-	asunder, apart, in two; reversal, removal;...
5	Latin	calceus	shoe
6	Latin	calx	limestone; chalk; the finish line
7	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

via Vietnamese đèn

Step	Language	Word	Meaning
1	Vietnamese	đèn	a light; a lamp, an oil lamp, a light bulb, an...

via Chinese 燈籠

Step	Language	Word	Meaning
1	Chinese	燈籠	Chinese lantern

Every word from Ancient Greek χάλιξ →Every word from Latin dis- →Every word from Latin -ē →