19-letter words containing c, r, y, f
- peroxysulfuric acid — persulfuric acid (def 1).
- reciprocity failure — a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values
- secondary infection — an infection resulting from another infection
- self-congratulatory — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
- superhigh frequency — any frequency between 3000 and 30,000 megahertz. Abbreviation: SHF.
- the world of cryton — (TWOC) A BBS for the Acorn Archimedes. Telephone: +44 (1749) 670 030 (24hrs, most speeds).
- turn of the century — point when one century becomes another
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- very high frequency — any frequency between 30 and 300 megahertz. Abbreviation: VHF.
- with flying colours — If you pass a test with flying colours, you have done very well in the test.