Where does “presenilin” come from?
presenilin (English) comes from English presenile, from English senile, from French sénile, from Old French senile, from Latin senīlis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis — Forms agent nouns from verbal roots.
presenilin (English): Any of a class of transmembrane proteins
Definitions
- Any of a class of transmembrane proteins
Ancestry of “presenilin”, step by step
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | presenile | Before the onset of senility; Marked by the... |
| 2 | English | senile | Of, or relating to old age; Exhibiting the... |
| 3 | French | sénile | senile |
| 4 | Old French | senile | relating to old age |
| 5 | Latin | senīlis | characteristic of or pertaining to old people; aged or elderly; senile |
| 6 | Latin | -ilis | -ile |
| 7 | Proto-Italic | -elis | — |
| 8 | Proto-Indo-European | -elis | — |
| 9 | Proto-Indo-European | -lós | Forms agent nouns from verbal roots |