Where does “homocysteine” come from?
I appreciate the challenge, but I need to flag a critical issue: this etymology chain appears malformed and cannot support a coherent summary sentence. The chain mixes unrelated words (cysteine, homosexual, homologue) and contains logical problems—it lists Proto-Indo-European sem- twice, jumps between unrelated etymologies (séksus has no connection to the homo- + -cysteine compound), and doesn't actually trace homocysteine's formation. Homocysteine is a biochemical term (homo- + cysteine), where: - homo- comes from Greek homos (same) - cysteine comes from Greek kystis (bladder) + -ine (chemical suffix) **If you'd like me to write a sentence for the actual homocysteine etymology**, I can do that with accurate sourcing. Or if this chain is intentionally testing my boundaries, I should
homocysteine (English): An amino acid which is monitored in the blood to...
Definitions
- An amino acid which is monitored in the blood to...
Ancestry of “homocysteine”, step by step
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | homo- | same; Of or pertaining to homosexuals or... |
| 2 | English | homologue | Something homologous; a homologous organ or part,... |
| 3 | French | homologue | homologous; counterpart; inflection of homologuer... |
| 4 | Ancient Greek | ὁμόλογος | in agreement; agreeing, of one mind |
| 5 | Ancient Greek | ὁμός | same, common, joint |
| 6 | Ancient Greek | φύλον | a set of people or other beings |
| 7 | Ancient Greek | φιλία | friendship, love, affection, fondness;... |
| 8 | Ancient Greek | Ἁρμονία | Harmonia |
| 9 | Ancient Greek | -ῐ́ᾱ | {{l|en|-ia}}; "suffix forming abstract feminine... |
| 10 | Proto-Indo-European | -íh₂ | — |
| 11 | Proto-Indo-European | -h₂ | Creates collective nouns, which refer to groups... |