19-letter words containing c, h, e, m
- tuamotu archipelago — a group of about 80 coral islands in the S Pacific, in French Polynesia. Pop: 15 973 (2002; including the Gambier Islands). Area: 860 sq km (332 sq miles)
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- velocity microphone — a microphone in which the output varies according to the instantaneous velocity of the air molecules in the incident sound waves.
- vesicular exanthema — an infectious viral disease of swine, characterized by blisters on the snout, mucous membranes, and feet.
- von neumann machine — the stored-program computer developed by John von Neumann and his associates
- what makes one tick — a slight, sharp, recurring click, tap, or beat, as of a clock.
- whispering campaign — the organized spreading of insinuations or rumors to destroy the reputation of a person, organization, etc.