Where does “trisomy” come from?
Trisomy comes from English three and the English suffix -some, ultimately from Proto-Indo-European sem- meaning "one" or "together."
trisomy (English): The presence of three copies, instead of the...
Definitions
- The presence of three copies, instead of the...
Ancestry of “trisomy”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | English | trisome | A chromosome which is represented three times... |
| 2 | English | some | A certain number, at least two; An indefinite... |
| 3 | Middle English | som | some |
| 4 | Old English | sum | some |
| 5 | Proto-West Germanic | *sum | some |
| 6 | Proto-Germanic | sumaz | some (one), a certain (one) |
| 7 | Proto-Indo-European | sem- | together, one |