3 ms·
It's just a subdivision; it might as well have said 1a, 1b... -- but "bis" and "cis/tris" (and possibly tetrakis) tend to emphasize that they're addenda, not eq
by lvh 5y ago
It's just a subdivision; it might as well have said 1a, 1b... -- but "bis" and "cis/tris" (and possibly tetrakis) tend to emphasize that they're addenda, not equal points.
- whoisburbansky 5y agoAh, gotcha. I thought I recognized the prefixes from Organic, but I don't think I've seen it used like this here. Neat!
- schoen 5y agoIt should normally be "bis" and "ter". The Latin for "once, twice, thrice, four times, five times" is "semel, bis, ter, quater, quinquies". ("Bis" and "ter" are the only really short ones.) It's moderately common in European standards and bureaucracy to use "bis" and "ter" for "version/revision 2" and "version/revision 3", respectively. For example https://en.wikipedia.org/wiki/List_of_ITU-T_V-series_recommendations https://en.wikipedia.org/wiki/List_of_ITU-T_V-series_recomme...
- lvh 5y agoHuh, good point; I wonder if my mind mixed up the org chem with the numbers (likely) or if that's some kind of unique Belgian affectation.