| 1 | English | dopamine | A monoamine CHNO that is a decarboxylated form of... |
| 2 | English | dopa | The amino acid dihydroxyphenylalanine that is... |
| 3 | English | dihydroxyphenylalanine | Either of two enantiomers of a derivative of the... |
| 4 | English | hydroxyphenyl | Any of three isomeric hydroxy derivatives of the... |
| 5 | English | hydroxy | Being, or containing a hydroxyl radical; Clipping... |
| 6 | English | Oxy | — |
| 7 | English | oxygen | The chemical element with an atomic number of 8... |
| 8 | French | oxygène | oxygen; inflection of oxygéner:
##... |
| 9 | Ancient Greek | γένος | offspring, descendant; family, clan; nation, race |
| 10 | Proto-Hellenic | génos | family; race |
| 11 | Proto-Indo-European | ǵénh₁os | race, lineage |
| 12 | Proto-Indo-European | ǵenh₁- | to produce, to beget, to give birth |