Where does “penam” come from?
penam (English) comes from English lactam, from English lactone, from English -one, from English ketone, from German Keton, from German Aketon, from French acétone, from Latin acētum — Forms adjectives from nouns, indicating the possession of a thing or a quality.
penam (English): A bicyclic ring system containing a beta-lactam moiety fused with a five-member thiazolidine ring; the common core skeleton of the penicillin subclass of beta-lactam antibiotics
Definitions
- A bicyclic ring system containing a beta-lactam moiety fused with a five-member thiazolidine ring; the common core skeleton of the penicillin subclass of beta-lactam antibiotics
Ancestry of “penam”, step by step
penam traces back through two separate lines of ancestry.
via English lactam
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | lactam | Any of a class of cyclic amides that are the... |
| 2 | English | lactone | A cyclic intramolecular ester derived from a... |
| 3 | English | -one | a ketone; any similar compound containing a... |
| 4 | English | ketone | A homologous series of organic molecules whose... |
| 5 | German | Keton | ketone |
| 6 | German | Aketon | acetone |
| 7 | French | acétone | acetone |
| 8 | Latin | acētum | vinegar |
| 9 | French | -ate | ate |
| 10 | Latin | -ātus | ed |
| 11 | Proto-Italic | -ātos | — |
| 12 | Proto-Indo-European | -éh₂tos | Forms adjectives from nouns, indicating the possession of a thing or a quality |
via English penicillin
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | penicillin | Any of a group of narrow-spectrum antibiotics... |
| 2 | Translingual | Penicillium | genus |
| 3 | Latin | pēnicillum | A painter's brush |
| 4 | Latin | -illus | Used to form adjectives from nouns |
| 5 | Latin | -lus | Alternative form of -ulus; diminutive suffix |
| 6 | Proto-Italic | -elos | Forms desubstantival and deadjectival diminutive nouns |
| 7 | Proto-Indo-European | -e-lós | — |
| 8 | Proto-Indo-European | -lós | Forms agent nouns from verbal roots |