pressure tube

noun

1

: a heavy tube containing reagents and hermetically closed so that interaction of the contents can be brought about at a much higher pressure than would be possible in an open tube

2

: bourdon tube

The Ultimate Dicitonary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now