Where does “thumbnail” come from?
thumbnail (Portuguese) comes from English thumbnail, from English thumb, from Middle English þombe, from Old English þūma, from Proto-West Germanic þūmō, from Proto-Germanic þūmô, from Proto-Indo-European tūm-, from Proto-Indo-European tewh₂- — to swell; to crowd; to be strong.
thumbnail (Portuguese): thumbnail
Ancestry of “thumbnail”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | English | thumbnail | The fingernail on the thumb; A rough sketch; A... |
| 2 | English | thumb | The short thick digit of the hand that for humans... |
| 3 | Middle English | þombe | thumb; thumb-length; big toe |
| 4 | Old English | þūma | thumb |
| 5 | Proto-West Germanic | þūmō | thumb |
| 6 | Proto-Germanic | þūmô | thumb |
| 7 | Proto-Indo-European | tūm- | to grow; to swell, to increase; to swell, be... |
| 8 | Proto-Indo-European | tewh₂- | to swell; to crowd; to be strong |