17-letter words containing b, u, c, a
- the black country — the formerly heavily industrialized region of central England, northwest of Birmingham
- the buckeye state — a nickname for Ohio
- the carboniferous — the Carboniferous period or rock system
- torricellian tube — a vertical glass tube partly evacuated and partly filled with mercury, the height of which is used as a measure of atmospheric pressure
- trouble came back — (jargon) (TCB) An IBM term for an intermittent or difficult-to-reproduce problem that has failed to respond to neglect or shotgun debugging. Compare heisenbug.
- tubercle bacillus — the bacterium, Mycobacterium tuberculosis, causing tuberculosis.
- turbosupercharger — (formerly) a turbocharger.
- ultramicrobalance — a balance for weighing precisely, to a hundredth of a microgram or less, minute quantities of material.
- uncircumscribable — to draw a line around; encircle: to circumscribe a city on a map.
- uncle tom's cabin — an antislavery novel (1852) by Harriet Beecher Stowe.
- uncomfortableness — causing discomfort or distress; painful; irritating.
- unpredictableness — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- wearable computer — a small computer that is worn or carried on the body; a wearable computing device: a wrist-worn wearable computer with a head-mounted display.
- working substance — a substance, usually a fluid, that undergoes changes in pressure, temperature, volume, or form as part of a process for accomplishing work.