Where does “lumrapideco” come from?

lumrapideco (Esperanto) comes from Esperanto lumo, from Latin lūmen, from English -escence, from Latin -escens, from Latin -esco, from Latin -eo, from Proto-Italic -ēō, from Proto-Italic -ējō — Creates transitive imperfective verbs from roots.

lumrapideco (Esperanto): speed of light

Definitions

  1. speed of light

Ancestry of “lumrapideco”, step by step

lumrapideco traces back through two separate lines of ancestry.

via Esperanto lumo

StepLanguageWordMeaning
1Esperantolumolight
2Latinlūmenlight, source of light
3English-escencea specified process or state
4Latin-escens
5Latin-escoForms verbs from adjectives meaning "become "
6Latin-eoForms stative verbs from adjectives; dative...
7Proto-Italic-ēōForms stative verbs, indicating a state of being;...
8Proto-Italic-ējō
9Proto-Indo-European-éh₁yetiThematicization of the athematic stative verbal...
10Proto-Indo-European-yetiCreates transitive imperfective verbs from roots

via Esperanto rapideco

StepLanguageWordMeaning
1Esperantorapidecospeed, velocity, rapidity, quickness, swiftness
2Esperantorapidaquick, fast, rapid
3EnglishrapidVery swift or quick; Steep, changing altitude...
4Frenchrapidefast, rapid; fast; rapidly; quickly; rapid
5Italianrapidoquick, fast, rapid
6Spanishrápidorapid, quick, fast; rapidly, quickly, fast; rapid
7Latinrapidusrapid, quick, swift; fierce, seizing; hasty,...
8Latinrapiōto snatch, grab, carry off, abduct, rape, steal
9Proto-Indo-Europeanh₁rp-i-
10Proto-Indo-Europeanh₁rep-to rip, snatch, tear, pinch; to seize, pluck; to...
Every word from Proto-Indo-European -yetiEvery word from Latin -eoEvery word from English -escence