19-letter words containing f, a, s, c
- transesterification — a reaction between an ester of one alcohol and a second alcohol to form an ester of the second alcohol and an alcohol from the original ester, as that of methyl acetate and ethyl alcohol to form ethyl acetate and methyl alcohol; interesterification.
- transference number — that fraction of the total electric current that anions and cations carry in passing through an electrolytic solution.
- tricks of the trade — expert techniques
- unclassified degree — a degree that has not been given a grade because it is of a low standard
- upper carboniferous — Pennsylvanian (defs 2, 4).